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Finding the Fourth Proportional to 666,122.05, 997,443.90 and 437,699.47

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Solution

The fourth proportional to 666,122.05, 997,443.90 and 437,699.47 is: 655,406.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,122.05 : 997,443.90 = 437,699.47 : x
  2. Step 2: Convert to fraction form
    666,122.05/997,443.90 = 437,699.47/x
  3. Step 3: Cross multiply
    666,122.05x = 997,443.90 × 437,699.47
  4. Step 4: Simplify right side
    666,122.05x = 436,580,666,384.73
  5. Step 5: Solve for x
    x = 436,580,666,384.73/666,122.05
  6. Step 6: Final answer
    x = 655,406.42

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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.