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Finding the Fourth Proportional to 978,748.80, 1,468,123.20 and 605,500.80

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Solution

The fourth proportional to 978,748.80, 1,468,123.20 and 605,500.80 is: 908,251.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,748.80 : 1,468,123.20 = 605,500.80 : x
  2. Step 2: Convert to fraction form
    978,748.80/1,468,123.20 = 605,500.80/x
  3. Step 3: Cross multiply
    978,748.80x = 1,468,123.20 × 605,500.80
  4. Step 4: Simplify right side
    978,748.80x = 888,949,772,098.56
  5. Step 5: Solve for x
    x = 888,949,772,098.56/978,748.80
  6. Step 6: Final answer
    x = 908,251.20

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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.