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Finding the Fourth Proportional to 1,569,891.70, 2,354,837.55 and 387,939.70

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Solution

The fourth proportional to 1,569,891.70, 2,354,837.55 and 387,939.70 is: 581,909.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569,891.70 : 2,354,837.55 = 387,939.70 : x
  2. Step 2: Convert to fraction form
    1,569,891.70/2,354,837.55 = 387,939.70/x
  3. Step 3: Cross multiply
    1,569,891.70x = 2,354,837.55 × 387,939.70
  4. Step 4: Simplify right side
    1,569,891.70x = 913,534,972,695.74
  5. Step 5: Solve for x
    x = 913,534,972,695.74/1,569,891.70
  6. Step 6: Final answer
    x = 581,909.55

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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.