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Finding the Fourth Proportional to 546,990, 754,872.12 and 308,526

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Solution

The fourth proportional to 546,990, 754,872.12 and 308,526 is: 425,780.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,990 : 754,872.12 = 308,526 : x
  2. Step 2: Convert to fraction form
    546,990/754,872.12 = 308,526/x
  3. Step 3: Cross multiply
    546,990x = 754,872.12 × 308,526
  4. Step 4: Simplify right side
    546,990x = 232,897,675,695.12
  5. Step 5: Solve for x
    x = 232,897,675,695.12/546,990
  6. Step 6: Final answer
    x = 425,780.50

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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.