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Finding the Fourth Proportional to 539,164.70, 807,149.61 and 399,549.98

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Solution

The fourth proportional to 539,164.70, 807,149.61 and 399,549.98 is: 598,141.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,164.70 : 807,149.61 = 399,549.98 : x
  2. Step 2: Convert to fraction form
    539,164.70/807,149.61 = 399,549.98/x
  3. Step 3: Cross multiply
    539,164.70x = 807,149.61 × 399,549.98
  4. Step 4: Simplify right side
    539,164.70x = 322,496,610,532.51
  5. Step 5: Solve for x
    x = 322,496,610,532.51/539,164.70
  6. Step 6: Final answer
    x = 598,141.18

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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.