Home / 1,439,023.12-2,158,158.68-427,872.80

Finding the Fourth Proportional to 1,439,023.12, 2,158,158.68 and 427,872.80

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Solution

The fourth proportional to 1,439,023.12, 2,158,158.68 and 427,872.80 is: 641,697.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,023.12 : 2,158,158.68 = 427,872.80 : x
  2. Step 2: Convert to fraction form
    1,439,023.12/2,158,158.68 = 427,872.80/x
  3. Step 3: Cross multiply
    1,439,023.12x = 2,158,158.68 × 427,872.80
  4. Step 4: Simplify right side
    1,439,023.12x = 923,417,397,255.90
  5. Step 5: Solve for x
    x = 923,417,397,255.90/1,439,023.12
  6. Step 6: Final answer
    x = 641,697.40

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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.