Home / 900,352,987.75-1,242,487,123.11-488,287,195.75

Finding the Fourth Proportional to 900,352,987.75, 1,242,487,123.11 and 488,287,195.75

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Solution

The fourth proportional to 900,352,987.75, 1,242,487,123.11 and 488,287,195.75 is: 673,836,330.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,352,987.75 : 1,242,487,123.11 = 488,287,195.75 : x
  2. Step 2: Convert to fraction form
    900,352,987.75/1,242,487,123.11 = 488,287,195.75/x
  3. Step 3: Cross multiply
    900,352,987.75x = 1,242,487,123.11 × 488,287,195.75
  4. Step 4: Simplify right side
    900,352,987.75x = 606,690,553,098,866,816
  5. Step 5: Solve for x
    x = 606,690,553,098,866,816/900,352,987.75
  6. Step 6: Final answer
    x = 673,836,330.14

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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.