Home / 656,479.20-984,135.60-389,956.80

Finding the Fourth Proportional to 656,479.20, 984,135.60 and 389,956.80

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Solution

The fourth proportional to 656,479.20, 984,135.60 and 389,956.80 is: 584,588.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,479.20 : 984,135.60 = 389,956.80 : x
  2. Step 2: Convert to fraction form
    656,479.20/984,135.60 = 389,956.80/x
  3. Step 3: Cross multiply
    656,479.20x = 984,135.60 × 389,956.80
  4. Step 4: Simplify right side
    656,479.20x = 383,770,369,342.08
  5. Step 5: Solve for x
    x = 383,770,369,342.08/656,479.20
  6. Step 6: Final answer
    x = 584,588.77

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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.