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Finding the Fourth Proportional to 656,999.40, 984,818.70 and 356,845.80

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Solution

The fourth proportional to 656,999.40, 984,818.70 and 356,845.80 is: 534,899.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,999.40 : 984,818.70 = 356,845.80 : x
  2. Step 2: Convert to fraction form
    656,999.40/984,818.70 = 356,845.80/x
  3. Step 3: Cross multiply
    656,999.40x = 984,818.70 × 356,845.80
  4. Step 4: Simplify right side
    656,999.40x = 351,428,416,856.46
  5. Step 5: Solve for x
    x = 351,428,416,856.46/656,999.40
  6. Step 6: Final answer
    x = 534,899.14

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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.