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Finding the Fourth Proportional to 493,310.70, 739,966.05 and 392,927.40

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Solution

The fourth proportional to 493,310.70, 739,966.05 and 392,927.40 is: 589,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,310.70 : 739,966.05 = 392,927.40 : x
  2. Step 2: Convert to fraction form
    493,310.70/739,966.05 = 392,927.40/x
  3. Step 3: Cross multiply
    493,310.70x = 739,966.05 × 392,927.40
  4. Step 4: Simplify right side
    493,310.70x = 290,752,936,114.77
  5. Step 5: Solve for x
    x = 290,752,936,114.77/493,310.70
  6. Step 6: Final answer
    x = 589,391.10

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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.