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Finding the Fourth Proportional to 557,859.53, 769,862.38 and 316,134.06

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Solution

The fourth proportional to 557,859.53, 769,862.38 and 316,134.06 is: 436,274.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,859.53 : 769,862.38 = 316,134.06 : x
  2. Step 2: Convert to fraction form
    557,859.53/769,862.38 = 316,134.06/x
  3. Step 3: Cross multiply
    557,859.53x = 769,862.38 × 316,134.06
  4. Step 4: Simplify right side
    557,859.53x = 243,379,719,830.66
  5. Step 5: Solve for x
    x = 243,379,719,830.66/557,859.53
  6. Step 6: Final answer
    x = 436,274.20

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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.