Home / 387,064.60-579,819.30-268,869.40

Finding the Fourth Proportional to 387,064.60, 579,819.30 and 268,869.40

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Solution

The fourth proportional to 387,064.60, 579,819.30 and 268,869.40 is: 402,763.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,064.60 : 579,819.30 = 268,869.40 : x
  2. Step 2: Convert to fraction form
    387,064.60/579,819.30 = 268,869.40/x
  3. Step 3: Cross multiply
    387,064.60x = 579,819.30 × 268,869.40
  4. Step 4: Simplify right side
    387,064.60x = 155,895,667,299.42
  5. Step 5: Solve for x
    x = 155,895,667,299.42/387,064.60
  6. Step 6: Final answer
    x = 402,763.95

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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.