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Finding the Fourth Proportional to 719,104.80, 992,562 and 417,396

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Solution

The fourth proportional to 719,104.80, 992,562 and 417,396 is: 576,121.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,104.80 : 992,562 = 417,396 : x
  2. Step 2: Convert to fraction form
    719,104.80/992,562 = 417,396/x
  3. Step 3: Cross multiply
    719,104.80x = 992,562 × 417,396
  4. Step 4: Simplify right side
    719,104.80x = 414,291,408,552
  5. Step 5: Solve for x
    x = 414,291,408,552/719,104.80
  6. Step 6: Final answer
    x = 576,121.04

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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.