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Finding the Fourth Proportional to 694,800, 958,824.32 and 392,987.52

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Solution

The fourth proportional to 694,800, 958,824.32 and 392,987.52 is: 542,322.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,800 : 958,824.32 = 392,987.52 : x
  2. Step 2: Convert to fraction form
    694,800/958,824.32 = 392,987.52/x
  3. Step 3: Cross multiply
    694,800x = 958,824.32 × 392,987.52
  4. Step 4: Simplify right side
    694,800x = 376,805,991,632.49
  5. Step 5: Solve for x
    x = 376,805,991,632.49/694,800
  6. Step 6: Final answer
    x = 542,322.96

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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.