Home / 425,981,567.70-638,972,351.55-380,065,065.30

Finding the Fourth Proportional to 425,981,567.70, 638,972,351.55 and 380,065,065.30

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Solution

The fourth proportional to 425,981,567.70, 638,972,351.55 and 380,065,065.30 is: 570,097,597.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,981,567.70 : 638,972,351.55 = 380,065,065.30 : x
  2. Step 2: Convert to fraction form
    425,981,567.70/638,972,351.55 = 380,065,065.30/x
  3. Step 3: Cross multiply
    425,981,567.70x = 638,972,351.55 × 380,065,065.30
  4. Step 4: Simplify right side
    425,981,567.70x = 242,851,068,516,745,280
  5. Step 5: Solve for x
    x = 242,851,068,516,745,280/425,981,567.70
  6. Step 6: Final answer
    x = 570,097,597.95

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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.