Home / 945,139.20-1,417,219.20-280,204.80

Finding the Fourth Proportional to 945,139.20, 1,417,219.20 and 280,204.80

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Solution

The fourth proportional to 945,139.20, 1,417,219.20 and 280,204.80 is: 420,162.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,139.20 : 1,417,219.20 = 280,204.80 : x
  2. Step 2: Convert to fraction form
    945,139.20/1,417,219.20 = 280,204.80/x
  3. Step 3: Cross multiply
    945,139.20x = 1,417,219.20 × 280,204.80
  4. Step 4: Simplify right side
    945,139.20x = 397,111,622,492.16
  5. Step 5: Solve for x
    x = 397,111,622,492.16/945,139.20
  6. Step 6: Final answer
    x = 420,162.05

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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.