Home / 945,079.20-1,417,129.20-280,144.80

Finding the Fourth Proportional to 945,079.20, 1,417,129.20 and 280,144.80

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Solution

The fourth proportional to 945,079.20, 1,417,129.20 and 280,144.80 is: 420,072.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,079.20 : 1,417,129.20 = 280,144.80 : x
  2. Step 2: Convert to fraction form
    945,079.20/1,417,129.20 = 280,144.80/x
  3. Step 3: Cross multiply
    945,079.20x = 1,417,129.20 × 280,144.80
  4. Step 4: Simplify right side
    945,079.20x = 397,001,376,308.16
  5. Step 5: Solve for x
    x = 397,001,376,308.16/945,079.20
  6. Step 6: Final answer
    x = 420,072.07

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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.