Home / 1,005,200.40-1,507,800.60-331,385.70

Finding the Fourth Proportional to 1,005,200.40, 1,507,800.60 and 331,385.70

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Solution

The fourth proportional to 1,005,200.40, 1,507,800.60 and 331,385.70 is: 497,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,200.40 : 1,507,800.60 = 331,385.70 : x
  2. Step 2: Convert to fraction form
    1,005,200.40/1,507,800.60 = 331,385.70/x
  3. Step 3: Cross multiply
    1,005,200.40x = 1,507,800.60 × 331,385.70
  4. Step 4: Simplify right side
    1,005,200.40x = 499,663,557,291.42
  5. Step 5: Solve for x
    x = 499,663,557,291.42/1,005,200.40
  6. Step 6: Final answer
    x = 497,078.55

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Half scale
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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.