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Finding the Fourth Proportional to 522,837, 784,255.50 and 128,853

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Solution

The fourth proportional to 522,837, 784,255.50 and 128,853 is: 193,279.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,837 : 784,255.50 = 128,853 : x
  2. Step 2: Convert to fraction form
    522,837/784,255.50 = 128,853/x
  3. Step 3: Cross multiply
    522,837x = 784,255.50 × 128,853
  4. Step 4: Simplify right side
    522,837x = 101,053,673,941.50
  5. Step 5: Solve for x
    x = 101,053,673,941.50/522,837
  6. Step 6: Final answer
    x = 193,279.50

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Similar ratio
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1.5x scale

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.