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Finding the Fourth Proportional to 585,519.18, 807,971.95 and 356,044.78

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Solution

The fourth proportional to 585,519.18, 807,971.95 and 356,044.78 is: 491,314.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,519.18 : 807,971.95 = 356,044.78 : x
  2. Step 2: Convert to fraction form
    585,519.18/807,971.95 = 356,044.78/x
  3. Step 3: Cross multiply
    585,519.18x = 807,971.95 × 356,044.78
  4. Step 4: Simplify right side
    585,519.18x = 287,674,195,183.92
  5. Step 5: Solve for x
    x = 287,674,195,183.92/585,519.18
  6. Step 6: Final answer
    x = 491,314.73

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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.