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Finding the Fourth Proportional to 502,829.70, 754,244.55 and 390,855.30

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Solution

The fourth proportional to 502,829.70, 754,244.55 and 390,855.30 is: 586,282.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,829.70 : 754,244.55 = 390,855.30 : x
  2. Step 2: Convert to fraction form
    502,829.70/754,244.55 = 390,855.30/x
  3. Step 3: Cross multiply
    502,829.70x = 754,244.55 × 390,855.30
  4. Step 4: Simplify right side
    502,829.70x = 294,800,479,863.62
  5. Step 5: Solve for x
    x = 294,800,479,863.62/502,829.70
  6. Step 6: Final answer
    x = 586,282.95

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Similar ratio
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1.5x scale

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.