Home / 723,787.20-1,085,680.80-499,838.40

Finding the Fourth Proportional to 723,787.20, 1,085,680.80 and 499,838.40

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Solution

The fourth proportional to 723,787.20, 1,085,680.80 and 499,838.40 is: 749,757.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,787.20 : 1,085,680.80 = 499,838.40 : x
  2. Step 2: Convert to fraction form
    723,787.20/1,085,680.80 = 499,838.40/x
  3. Step 3: Cross multiply
    723,787.20x = 1,085,680.80 × 499,838.40
  4. Step 4: Simplify right side
    723,787.20x = 542,664,953,982.72
  5. Step 5: Solve for x
    x = 542,664,953,982.72/723,787.20
  6. Step 6: Final answer
    x = 749,757.60

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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.