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Finding the Fourth Proportional to 987,377, 1,481,070.36 and 239,423

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Solution

The fourth proportional to 987,377, 1,481,070.36 and 239,423 is: 359,135.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,377 : 1,481,070.36 = 239,423 : x
  2. Step 2: Convert to fraction form
    987,377/1,481,070.36 = 239,423/x
  3. Step 3: Cross multiply
    987,377x = 1,481,070.36 × 239,423
  4. Step 4: Simplify right side
    987,377x = 354,602,308,802.28
  5. Step 5: Solve for x
    x = 354,602,308,802.28/987,377
  6. Step 6: Final answer
    x = 359,135.68

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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.