Home / 641,149,430.40-961,724,145.60-437,076,086.40

Finding the Fourth Proportional to 641,149,430.40, 961,724,145.60 and 437,076,086.40

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Solution

The fourth proportional to 641,149,430.40, 961,724,145.60 and 437,076,086.40 is: 655,614,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,149,430.40 : 961,724,145.60 = 437,076,086.40 : x
  2. Step 2: Convert to fraction form
    641,149,430.40/961,724,145.60 = 437,076,086.40/x
  3. Step 3: Cross multiply
    641,149,430.40x = 961,724,145.60 × 437,076,086.40
  4. Step 4: Simplify right side
    641,149,430.40x = 420,346,625,755,231,744
  5. Step 5: Solve for x
    x = 420,346,625,755,231,744/641,149,430.40
  6. Step 6: Final answer
    x = 655,614,129.60

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.