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Finding the Fourth Proportional to 668,029.20, 921,862.80 and 362,092.20

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Solution

The fourth proportional to 668,029.20, 921,862.80 and 362,092.20 is: 499,677.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,029.20 : 921,862.80 = 362,092.20 : x
  2. Step 2: Convert to fraction form
    668,029.20/921,862.80 = 362,092.20/x
  3. Step 3: Cross multiply
    668,029.20x = 921,862.80 × 362,092.20
  4. Step 4: Simplify right side
    668,029.20x = 333,799,329,350.16
  5. Step 5: Solve for x
    x = 333,799,329,350.16/668,029.20
  6. Step 6: Final answer
    x = 499,677.75

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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.