Home / 493,312.20-739,968.30-392,928.90

Finding the Fourth Proportional to 493,312.20, 739,968.30 and 392,928.90

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Solution

The fourth proportional to 493,312.20, 739,968.30 and 392,928.90 is: 589,393.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,312.20 : 739,968.30 = 392,928.90 : x
  2. Step 2: Convert to fraction form
    493,312.20/739,968.30 = 392,928.90/x
  3. Step 3: Cross multiply
    493,312.20x = 739,968.30 × 392,928.90
  4. Step 4: Simplify right side
    493,312.20x = 290,754,930,153.87
  5. Step 5: Solve for x
    x = 290,754,930,153.87/493,312.20
  6. Step 6: Final answer
    x = 589,393.35

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Double scale
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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.