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Finding the Fourth Proportional to 625,404.38, 863,101.17 and 380,484.68

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Solution

The fourth proportional to 625,404.38, 863,101.17 and 380,484.68 is: 525,095.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,404.38 : 863,101.17 = 380,484.68 : x
  2. Step 2: Convert to fraction form
    625,404.38/863,101.17 = 380,484.68/x
  3. Step 3: Cross multiply
    625,404.38x = 863,101.17 × 380,484.68
  4. Step 4: Simplify right side
    625,404.38x = 328,396,768,159.57
  5. Step 5: Solve for x
    x = 328,396,768,159.57/625,404.38
  6. Step 6: Final answer
    x = 525,095.09

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1.5x scale

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.