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Finding the Fourth Proportional to 625,896,105.28, 863,826,445.92 and 375,010,405.12

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Solution

The fourth proportional to 625,896,105.28, 863,826,445.92 and 375,010,405.12 is: 517,568,175.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,896,105.28 : 863,826,445.92 = 375,010,405.12 : x
  2. Step 2: Convert to fraction form
    625,896,105.28/863,826,445.92 = 375,010,405.12/x
  3. Step 3: Cross multiply
    625,896,105.28x = 863,826,445.92 × 375,010,405.12
  4. Step 4: Simplify right side
    625,896,105.28x = 323,943,905,437,828,928
  5. Step 5: Solve for x
    x = 323,943,905,437,828,928/625,896,105.28
  6. Step 6: Final answer
    x = 517,568,175.78

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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.