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Finding the Fourth Proportional to 978,822.80, 1,468,234.20 and 347,800.40

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Solution

The fourth proportional to 978,822.80, 1,468,234.20 and 347,800.40 is: 521,700.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,822.80 : 1,468,234.20 = 347,800.40 : x
  2. Step 2: Convert to fraction form
    978,822.80/1,468,234.20 = 347,800.40/x
  3. Step 3: Cross multiply
    978,822.80x = 1,468,234.20 × 347,800.40
  4. Step 4: Simplify right side
    978,822.80x = 510,652,442,053.68
  5. Step 5: Solve for x
    x = 510,652,442,053.68/978,822.80
  6. Step 6: Final answer
    x = 521,700.60

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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.