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Finding the Fourth Proportional to 425,147,316.80, 636,587,234.40 and 425,147,316.80

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Solution

The fourth proportional to 425,147,316.80, 636,587,234.40 and 425,147,316.80 is: 636,587,234.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,147,316.80 : 636,587,234.40 = 425,147,316.80 : x
  2. Step 2: Convert to fraction form
    425,147,316.80/636,587,234.40 = 425,147,316.80/x
  3. Step 3: Cross multiply
    425,147,316.80x = 636,587,234.40 × 425,147,316.80
  4. Step 4: Simplify right side
    425,147,316.80x = 270,643,354,614,292,640
  5. Step 5: Solve for x
    x = 270,643,354,614,292,640/425,147,316.80
  6. Step 6: Final answer
    x = 636,587,234.40

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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.