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Finding the Fourth Proportional to 625,282.46, 863,187.33 and 418,906.20

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Solution

The fourth proportional to 625,282.46, 863,187.33 and 418,906.20 is: 578,289.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,282.46 : 863,187.33 = 418,906.20 : x
  2. Step 2: Convert to fraction form
    625,282.46/863,187.33 = 418,906.20/x
  3. Step 3: Cross multiply
    625,282.46x = 863,187.33 × 418,906.20
  4. Step 4: Simplify right side
    625,282.46x = 361,594,524,298.45
  5. Step 5: Solve for x
    x = 361,594,524,298.45/625,282.46
  6. Step 6: Final answer
    x = 578,289.89

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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.