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Finding the Fourth Proportional to 1,747,281.78, 2,411,242.77 and 972,921.90

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Solution

The fourth proportional to 1,747,281.78, 2,411,242.77 and 972,921.90 is: 1,342,628.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,747,281.78 : 2,411,242.77 = 972,921.90 : x
  2. Step 2: Convert to fraction form
    1,747,281.78/2,411,242.77 = 972,921.90/x
  3. Step 3: Cross multiply
    1,747,281.78x = 2,411,242.77 × 972,921.90
  4. Step 4: Simplify right side
    1,747,281.78x = 2,345,950,897,149.66
  5. Step 5: Solve for x
    x = 2,345,950,897,149.66/1,747,281.78
  6. Step 6: Final answer
    x = 1,342,628.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.