Home / 493,298.20-739,947.30-392,914.90

Finding the Fourth Proportional to 493,298.20, 739,947.30 and 392,914.90

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Solution

The fourth proportional to 493,298.20, 739,947.30 and 392,914.90 is: 589,372.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,298.20 : 739,947.30 = 392,914.90 : x
  2. Step 2: Convert to fraction form
    493,298.20/739,947.30 = 392,914.90/x
  3. Step 3: Cross multiply
    493,298.20x = 739,947.30 × 392,914.90
  4. Step 4: Simplify right side
    493,298.20x = 290,736,319,384.77
  5. Step 5: Solve for x
    x = 290,736,319,384.77/493,298.20
  6. Step 6: Final answer
    x = 589,372.35

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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.