Home / 723,765.70-1,085,648.55-499,816.90

Finding the Fourth Proportional to 723,765.70, 1,085,648.55 and 499,816.90

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Solution

The fourth proportional to 723,765.70, 1,085,648.55 and 499,816.90 is: 749,725.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,765.70 : 1,085,648.55 = 499,816.90 : x
  2. Step 2: Convert to fraction form
    723,765.70/1,085,648.55 = 499,816.90/x
  3. Step 3: Cross multiply
    723,765.70x = 1,085,648.55 × 499,816.90
  4. Step 4: Simplify right side
    723,765.70x = 542,625,492,750.50
  5. Step 5: Solve for x
    x = 542,625,492,750.50/723,765.70
  6. Step 6: Final answer
    x = 749,725.35

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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.