Home / 638,023,472.10-957,035,208.15-408,252,003.30

Finding the Fourth Proportional to 638,023,472.10, 957,035,208.15 and 408,252,003.30

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Solution

The fourth proportional to 638,023,472.10, 957,035,208.15 and 408,252,003.30 is: 612,378,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,023,472.10 : 957,035,208.15 = 408,252,003.30 : x
  2. Step 2: Convert to fraction form
    638,023,472.10/957,035,208.15 = 408,252,003.30/x
  3. Step 3: Cross multiply
    638,023,472.10x = 957,035,208.15 × 408,252,003.30
  4. Step 4: Simplify right side
    638,023,472.10x = 390,711,540,955,870,016
  5. Step 5: Solve for x
    x = 390,711,540,955,870,016/638,023,472.10
  6. Step 6: Final answer
    x = 612,378,004.95

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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.