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Finding the Fourth Proportional to 713,591.52, 984,786.18 and 391,314.04

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Solution

The fourth proportional to 713,591.52, 984,786.18 and 391,314.04 is: 540,029.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,591.52 : 984,786.18 = 391,314.04 : x
  2. Step 2: Convert to fraction form
    713,591.52/984,786.18 = 391,314.04/x
  3. Step 3: Cross multiply
    713,591.52x = 984,786.18 × 391,314.04
  4. Step 4: Simplify right side
    713,591.52x = 385,360,658,631.97
  5. Step 5: Solve for x
    x = 385,360,658,631.97/713,591.52
  6. Step 6: Final answer
    x = 540,029.76

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1.5x scale

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.