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Finding the Fourth Proportional to 978,687.60, 1,468,031.40 and 695,252.40

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Solution

The fourth proportional to 978,687.60, 1,468,031.40 and 695,252.40 is: 1,042,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,687.60 : 1,468,031.40 = 695,252.40 : x
  2. Step 2: Convert to fraction form
    978,687.60/1,468,031.40 = 695,252.40/x
  3. Step 3: Cross multiply
    978,687.60x = 1,468,031.40 × 695,252.40
  4. Step 4: Simplify right side
    978,687.60x = 1,020,652,354,125.36
  5. Step 5: Solve for x
    x = 1,020,652,354,125.36/978,687.60
  6. Step 6: Final answer
    x = 1,042,878.60

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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.