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Finding the Fourth Proportional to 763,335.72, 1,053,436.20 and 423,804

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Solution

The fourth proportional to 763,335.72, 1,053,436.20 and 423,804 is: 584,867.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,335.72 : 1,053,436.20 = 423,804 : x
  2. Step 2: Convert to fraction form
    763,335.72/1,053,436.20 = 423,804/x
  3. Step 3: Cross multiply
    763,335.72x = 1,053,436.20 × 423,804
  4. Step 4: Simplify right side
    763,335.72x = 446,450,475,304.80
  5. Step 5: Solve for x
    x = 446,450,475,304.80/763,335.72
  6. Step 6: Final answer
    x = 584,867.79

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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.