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Finding the Fourth Proportional to 671,985.90, 1,007,978.85 and 504,024.30

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Solution

The fourth proportional to 671,985.90, 1,007,978.85 and 504,024.30 is: 756,036.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,985.90 : 1,007,978.85 = 504,024.30 : x
  2. Step 2: Convert to fraction form
    671,985.90/1,007,978.85 = 504,024.30/x
  3. Step 3: Cross multiply
    671,985.90x = 1,007,978.85 × 504,024.30
  4. Step 4: Simplify right side
    671,985.90x = 508,045,834,286.06
  5. Step 5: Solve for x
    x = 508,045,834,286.06/671,985.90
  6. Step 6: Final answer
    x = 756,036.45

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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.