Home / 431,569,310.10-647,353,965.15-247,147,473.30

Finding the Fourth Proportional to 431,569,310.10, 647,353,965.15 and 247,147,473.30

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Solution

The fourth proportional to 431,569,310.10, 647,353,965.15 and 247,147,473.30 is: 370,721,209.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,310.10 : 647,353,965.15 = 247,147,473.30 : x
  2. Step 2: Convert to fraction form
    431,569,310.10/647,353,965.15 = 247,147,473.30/x
  3. Step 3: Cross multiply
    431,569,310.10x = 647,353,965.15 × 247,147,473.30
  4. Step 4: Simplify right side
    431,569,310.10x = 159,991,896,817,558,752
  5. Step 5: Solve for x
    x = 159,991,896,817,558,752/431,569,310.10
  6. Step 6: Final answer
    x = 370,721,209.95

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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.