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Finding the Fourth Proportional to 646,248.66, 891,242.64 and 404,553.30

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Solution

The fourth proportional to 646,248.66, 891,242.64 and 404,553.30 is: 557,920.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,248.66 : 891,242.64 = 404,553.30 : x
  2. Step 2: Convert to fraction form
    646,248.66/891,242.64 = 404,553.30/x
  3. Step 3: Cross multiply
    646,248.66x = 891,242.64 × 404,553.30
  4. Step 4: Simplify right side
    646,248.66x = 360,555,151,112.71
  5. Step 5: Solve for x
    x = 360,555,151,112.71/646,248.66
  6. Step 6: Final answer
    x = 557,920.15

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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.