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Finding the Fourth Proportional to 492,358.40, 738,829.20 and 358,902.80

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Solution

The fourth proportional to 492,358.40, 738,829.20 and 358,902.80 is: 538,566.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,358.40 : 738,829.20 = 358,902.80 : x
  2. Step 2: Convert to fraction form
    492,358.40/738,829.20 = 358,902.80/x
  3. Step 3: Cross multiply
    492,358.40x = 738,829.20 × 358,902.80
  4. Step 4: Simplify right side
    492,358.40x = 265,167,868,601.76
  5. Step 5: Solve for x
    x = 265,167,868,601.76/492,358.40
  6. Step 6: Final answer
    x = 538,566.76

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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.