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Finding the Fourth Proportional to 690,396.80, 952,648.44 and 403,862.72

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Solution

The fourth proportional to 690,396.80, 952,648.44 and 403,862.72 is: 557,272.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,396.80 : 952,648.44 = 403,862.72 : x
  2. Step 2: Convert to fraction form
    690,396.80/952,648.44 = 403,862.72/x
  3. Step 3: Cross multiply
    690,396.80x = 952,648.44 × 403,862.72
  4. Step 4: Simplify right side
    690,396.80x = 384,739,190,182.16
  5. Step 5: Solve for x
    x = 384,739,190,182.16/690,396.80
  6. Step 6: Final answer
    x = 557,272.56

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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.