Home / 838,780.15-1,257,265.18-411,819.43

Finding the Fourth Proportional to 838,780.15, 1,257,265.18 and 411,819.43

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Solution

The fourth proportional to 838,780.15, 1,257,265.18 and 411,819.43 is: 617,284.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,780.15 : 1,257,265.18 = 411,819.43 : x
  2. Step 2: Convert to fraction form
    838,780.15/1,257,265.18 = 411,819.43/x
  3. Step 3: Cross multiply
    838,780.15x = 1,257,265.18 × 411,819.43
  4. Step 4: Simplify right side
    838,780.15x = 517,766,225,613.74
  5. Step 5: Solve for x
    x = 517,766,225,613.74/838,780.15
  6. Step 6: Final answer
    x = 617,284.79

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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.