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Finding the Fourth Proportional to 978,751.80, 1,468,127.70 and 347,729.40

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Solution

The fourth proportional to 978,751.80, 1,468,127.70 and 347,729.40 is: 521,594.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,751.80 : 1,468,127.70 = 347,729.40 : x
  2. Step 2: Convert to fraction form
    978,751.80/1,468,127.70 = 347,729.40/x
  3. Step 3: Cross multiply
    978,751.80x = 1,468,127.70 × 347,729.40
  4. Step 4: Simplify right side
    978,751.80x = 510,511,164,244.38
  5. Step 5: Solve for x
    x = 510,511,164,244.38/978,751.80
  6. Step 6: Final answer
    x = 521,594.10

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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.