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Finding the Fourth Proportional to 591,876.75, 816,253.70 and 387,853.57

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Solution

The fourth proportional to 591,876.75, 816,253.70 and 387,853.57 is: 534,886.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,876.75 : 816,253.70 = 387,853.57 : x
  2. Step 2: Convert to fraction form
    591,876.75/816,253.70 = 387,853.57/x
  3. Step 3: Cross multiply
    591,876.75x = 816,253.70 × 387,853.57
  4. Step 4: Simplify right side
    591,876.75x = 316,586,911,570.71
  5. Step 5: Solve for x
    x = 316,586,911,570.71/591,876.75
  6. Step 6: Final answer
    x = 534,886.55

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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.