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Finding the Fourth Proportional to 656,492.20, 984,047.10 and 256,978.60

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Solution

The fourth proportional to 656,492.20, 984,047.10 and 256,978.60 is: 385,197.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,492.20 : 984,047.10 = 256,978.60 : x
  2. Step 2: Convert to fraction form
    656,492.20/984,047.10 = 256,978.60/x
  3. Step 3: Cross multiply
    656,492.20x = 984,047.10 × 256,978.60
  4. Step 4: Simplify right side
    656,492.20x = 252,879,046,092.06
  5. Step 5: Solve for x
    x = 252,879,046,092.06/656,492.20
  6. Step 6: Final answer
    x = 385,197.34

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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.