Home / 625,255,917.12-862,288,636.32-390,328,234.56

Finding the Fourth Proportional to 625,255,917.12, 862,288,636.32 and 390,328,234.56

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Solution

The fourth proportional to 625,255,917.12, 862,288,636.32 and 390,328,234.56 is: 538,300,545.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,255,917.12 : 862,288,636.32 = 390,328,234.56 : x
  2. Step 2: Convert to fraction form
    625,255,917.12/862,288,636.32 = 390,328,234.56/x
  3. Step 3: Cross multiply
    625,255,917.12x = 862,288,636.32 × 390,328,234.56
  4. Step 4: Simplify right side
    625,255,917.12x = 336,575,601,095,935,488
  5. Step 5: Solve for x
    x = 336,575,601,095,935,488/625,255,917.12
  6. Step 6: Final answer
    x = 538,300,545.23

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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.