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Finding the Fourth Proportional to 987,807, 1,481,809.68 and 268,160.88

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Solution

The fourth proportional to 987,807, 1,481,809.68 and 268,160.88 is: 402,268.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,807 : 1,481,809.68 = 268,160.88 : x
  2. Step 2: Convert to fraction form
    987,807/1,481,809.68 = 268,160.88/x
  3. Step 3: Cross multiply
    987,807x = 1,481,809.68 × 268,160.88
  4. Step 4: Simplify right side
    987,807x = 397,363,387,781.32
  5. Step 5: Solve for x
    x = 397,363,387,781.32/987,807
  6. Step 6: Final answer
    x = 402,268.24

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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.