Home / 1,231,398,260.80-1,699,308,598.12-666,878,567.47

Finding the Fourth Proportional to 1,231,398,260.80, 1,699,308,598.12 and 666,878,567.47

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Solution

The fourth proportional to 1,231,398,260.80, 1,699,308,598.12 and 666,878,567.47 is: 920,281,049.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,398,260.80 : 1,699,308,598.12 = 666,878,567.47 : x
  2. Step 2: Convert to fraction form
    1,231,398,260.80/1,699,308,598.12 = 666,878,567.47/x
  3. Step 3: Cross multiply
    1,231,398,260.80x = 1,699,308,598.12 × 666,878,567.47
  4. Step 4: Simplify right side
    1,231,398,260.80x = 1,133,232,483,603,719,552
  5. Step 5: Solve for x
    x = 1,133,232,483,603,719,552/1,231,398,260.80
  6. Step 6: Final answer
    x = 920,281,049.34

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Half scale
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Double scale
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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.