Home / 437,520.57-656,317.91-121,977.78

Finding the Fourth Proportional to 437,520.57, 656,317.91 and 121,977.78

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Solution

The fourth proportional to 437,520.57, 656,317.91 and 121,977.78 is: 182,977.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,520.57 : 656,317.91 = 121,977.78 : x
  2. Step 2: Convert to fraction form
    437,520.57/656,317.91 = 121,977.78/x
  3. Step 3: Cross multiply
    437,520.57x = 656,317.91 × 121,977.78
  4. Step 4: Simplify right side
    437,520.57x = 80,056,201,636.04
  5. Step 5: Solve for x
    x = 80,056,201,636.04/437,520.57
  6. Step 6: Final answer
    x = 182,977.00

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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.