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Finding the Fourth Proportional to 557,599.27, 769,461.92 and 315,876.91

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Solution

The fourth proportional to 557,599.27, 769,461.92 and 315,876.91 is: 435,895.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,599.27 : 769,461.92 = 315,876.91 : x
  2. Step 2: Convert to fraction form
    557,599.27/769,461.92 = 315,876.91/x
  3. Step 3: Cross multiply
    557,599.27x = 769,461.92 × 315,876.91
  4. Step 4: Simplify right side
    557,599.27x = 243,055,252,072.88
  5. Step 5: Solve for x
    x = 243,055,252,072.88/557,599.27
  6. Step 6: Final answer
    x = 435,895.93

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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.