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Finding the Fourth Proportional to 526,053.72, 789,279.22 and 315,838.20

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Solution

The fourth proportional to 526,053.72, 789,279.22 and 315,838.20 is: 473,876.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,053.72 : 789,279.22 = 315,838.20 : x
  2. Step 2: Convert to fraction form
    526,053.72/789,279.22 = 315,838.20/x
  3. Step 3: Cross multiply
    526,053.72x = 789,279.22 × 315,838.20
  4. Step 4: Simplify right side
    526,053.72x = 249,284,528,142.20
  5. Step 5: Solve for x
    x = 249,284,528,142.20/526,053.72
  6. Step 6: Final answer
    x = 473,876.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.