Home / 811,519.82-1,119,545.24-489,046.66

Finding the Fourth Proportional to 811,519.82, 1,119,545.24 and 489,046.66

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Solution

The fourth proportional to 811,519.82, 1,119,545.24 and 489,046.66 is: 674,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,519.82 : 1,119,545.24 = 489,046.66 : x
  2. Step 2: Convert to fraction form
    811,519.82/1,119,545.24 = 489,046.66/x
  3. Step 3: Cross multiply
    811,519.82x = 1,119,545.24 × 489,046.66
  4. Step 4: Simplify right side
    811,519.82x = 547,509,860,340.90
  5. Step 5: Solve for x
    x = 547,509,860,340.90/811,519.82
  6. Step 6: Final answer
    x = 674,672.20

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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.