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Finding the Fourth Proportional to 763,340.64, 1,053,369 and 423,787.02

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Solution

The fourth proportional to 763,340.64, 1,053,369 and 423,787.02 is: 584,803.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,340.64 : 1,053,369 = 423,787.02 : x
  2. Step 2: Convert to fraction form
    763,340.64/1,053,369 = 423,787.02/x
  3. Step 3: Cross multiply
    763,340.64x = 1,053,369 × 423,787.02
  4. Step 4: Simplify right side
    763,340.64x = 446,404,109,470.38
  5. Step 5: Solve for x
    x = 446,404,109,470.38/763,340.64
  6. Step 6: Final answer
    x = 584,803.28

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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.