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Finding the Fourth Proportional to 398,601.60, 597,902.40 and 392,696.70

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Solution

The fourth proportional to 398,601.60, 597,902.40 and 392,696.70 is: 589,045.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,601.60 : 597,902.40 = 392,696.70 : x
  2. Step 2: Convert to fraction form
    398,601.60/597,902.40 = 392,696.70/x
  3. Step 3: Cross multiply
    398,601.60x = 597,902.40 × 392,696.70
  4. Step 4: Simplify right side
    398,601.60x = 234,794,299,402.08
  5. Step 5: Solve for x
    x = 234,794,299,402.08/398,601.60
  6. Step 6: Final answer
    x = 589,045.05

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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.