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Finding the Fourth Proportional to 614,186.40, 921,862.80 and 377,990.40

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Solution

The fourth proportional to 614,186.40, 921,862.80 and 377,990.40 is: 567,344.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,186.40 : 921,862.80 = 377,990.40 : x
  2. Step 2: Convert to fraction form
    614,186.40/921,862.80 = 377,990.40/x
  3. Step 3: Cross multiply
    614,186.40x = 921,862.80 × 377,990.40
  4. Step 4: Simplify right side
    614,186.40x = 348,455,288,517.12
  5. Step 5: Solve for x
    x = 348,455,288,517.12/614,186.40
  6. Step 6: Final answer
    x = 567,344.52

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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.