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Finding the Fourth Proportional to 576,452.21, 865,990.51 and 417,019.91

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Solution

The fourth proportional to 576,452.21, 865,990.51 and 417,019.91 is: 626,479.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,452.21 : 865,990.51 = 417,019.91 : x
  2. Step 2: Convert to fraction form
    576,452.21/865,990.51 = 417,019.91/x
  3. Step 3: Cross multiply
    576,452.21x = 865,990.51 × 417,019.91
  4. Step 4: Simplify right side
    576,452.21x = 361,135,279,168.55
  5. Step 5: Solve for x
    x = 361,135,279,168.55/576,452.21
  6. Step 6: Final answer
    x = 626,479.14

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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.