Home / 1,218,269,222.39-1,681,231,977.39-661,352,267.63

Finding the Fourth Proportional to 1,218,269,222.39, 1,681,231,977.39 and 661,352,267.63

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Solution

The fourth proportional to 1,218,269,222.39, 1,681,231,977.39 and 661,352,267.63 is: 912,677,231.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,269,222.39 : 1,681,231,977.39 = 661,352,267.63 : x
  2. Step 2: Convert to fraction form
    1,218,269,222.39/1,681,231,977.39 = 661,352,267.63/x
  3. Step 3: Cross multiply
    1,218,269,222.39x = 1,681,231,977.39 × 661,352,267.63
  4. Step 4: Simplify right side
    1,218,269,222.39x = 1,111,886,580,650,539,264
  5. Step 5: Solve for x
    x = 1,111,886,580,650,539,264/1,218,269,222.39
  6. Step 6: Final answer
    x = 912,677,231.12

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Half scale
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Double scale
Find fourth proportional to 1,218,269,223.39, 1,681,231,978.77 and 661,352,268.63
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.