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Finding the Fourth Proportional to 557,787.72, 769,717.52 and 316,073.18

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Solution

The fourth proportional to 557,787.72, 769,717.52 and 316,073.18 is: 436,164.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,787.72 : 769,717.52 = 316,073.18 : x
  2. Step 2: Convert to fraction form
    557,787.72/769,717.52 = 316,073.18/x
  3. Step 3: Cross multiply
    557,787.72x = 769,717.52 × 316,073.18
  4. Step 4: Simplify right side
    557,787.72x = 243,287,064,248.11
  5. Step 5: Solve for x
    x = 243,287,064,248.11/557,787.72
  6. Step 6: Final answer
    x = 436,164.25

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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.