Home / 761,343.68-1,142,023.60-311,949.20

Finding the Fourth Proportional to 761,343.68, 1,142,023.60 and 311,949.20

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Solution

The fourth proportional to 761,343.68, 1,142,023.60 and 311,949.20 is: 467,927.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,343.68 : 1,142,023.60 = 311,949.20 : x
  2. Step 2: Convert to fraction form
    761,343.68/1,142,023.60 = 311,949.20/x
  3. Step 3: Cross multiply
    761,343.68x = 1,142,023.60 × 311,949.20
  4. Step 4: Simplify right side
    761,343.68x = 356,253,348,401.12
  5. Step 5: Solve for x
    x = 356,253,348,401.12/761,343.68
  6. Step 6: Final answer
    x = 467,927.11

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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.