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Finding the Fourth Proportional to 658,126.80, 987,190.20 and 564,814.80

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Solution

The fourth proportional to 658,126.80, 987,190.20 and 564,814.80 is: 847,222.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,126.80 : 987,190.20 = 564,814.80 : x
  2. Step 2: Convert to fraction form
    658,126.80/987,190.20 = 564,814.80/x
  3. Step 3: Cross multiply
    658,126.80x = 987,190.20 × 564,814.80
  4. Step 4: Simplify right side
    658,126.80x = 557,579,635,374.96
  5. Step 5: Solve for x
    x = 557,579,635,374.96/658,126.80
  6. Step 6: Final answer
    x = 847,222.20

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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.