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Finding the Fourth Proportional to 646,253.22, 891,248.82 and 404,557.80

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Solution

The fourth proportional to 646,253.22, 891,248.82 and 404,557.80 is: 557,926.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,253.22 : 891,248.82 = 404,557.80 : x
  2. Step 2: Convert to fraction form
    646,253.22/891,248.82 = 404,557.80/x
  3. Step 3: Cross multiply
    646,253.22x = 891,248.82 × 404,557.80
  4. Step 4: Simplify right side
    646,253.22x = 360,561,661,871.80
  5. Step 5: Solve for x
    x = 360,561,661,871.80/646,253.22
  6. Step 6: Final answer
    x = 557,926.29

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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.