Home / 1,218,185,408.48-1,681,097,996.28-661,268,832.80

Finding the Fourth Proportional to 1,218,185,408.48, 1,681,097,996.28 and 661,268,832.80

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Solution

The fourth proportional to 1,218,185,408.48, 1,681,097,996.28 and 661,268,832.80 is: 912,552,146.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,185,408.48 : 1,681,097,996.28 = 661,268,832.80 : x
  2. Step 2: Convert to fraction form
    1,218,185,408.48/1,681,097,996.28 = 661,268,832.80/x
  3. Step 3: Cross multiply
    1,218,185,408.48x = 1,681,097,996.28 × 661,268,832.80
  4. Step 4: Simplify right side
    1,218,185,408.48x = 1,111,657,709,822,494,208
  5. Step 5: Solve for x
    x = 1,111,657,709,822,494,208/1,218,185,408.48
  6. Step 6: Final answer
    x = 912,552,146.89

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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.