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Finding the Fourth Proportional to 539,068.85, 807,974.51 and 405,519.69

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Solution

The fourth proportional to 539,068.85, 807,974.51 and 405,519.69 is: 607,806.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,068.85 : 807,974.51 = 405,519.69 : x
  2. Step 2: Convert to fraction form
    539,068.85/807,974.51 = 405,519.69/x
  3. Step 3: Cross multiply
    539,068.85x = 807,974.51 × 405,519.69
  4. Step 4: Simplify right side
    539,068.85x = 327,649,573,825.41
  5. Step 5: Solve for x
    x = 327,649,573,825.41/539,068.85
  6. Step 6: Final answer
    x = 607,806.54

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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.