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Finding the Fourth Proportional to 718,920,259.54, 992,034,346.15 and 417,446,640.70

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Solution

The fourth proportional to 718,920,259.54, 992,034,346.15 and 417,446,640.70 is: 576,032,459.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,920,259.54 : 992,034,346.15 = 417,446,640.70 : x
  2. Step 2: Convert to fraction form
    718,920,259.54/992,034,346.15 = 417,446,640.70/x
  3. Step 3: Cross multiply
    718,920,259.54x = 992,034,346.15 × 417,446,640.70
  4. Step 4: Simplify right side
    718,920,259.54x = 414,121,405,259,233,408
  5. Step 5: Solve for x
    x = 414,121,405,259,233,408/718,920,259.54
  6. Step 6: Final answer
    x = 576,032,459.46

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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.