Home / 761,139.42-1,141,815.78-311,924.22

Finding the Fourth Proportional to 761,139.42, 1,141,815.78 and 311,924.22

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Solution

The fourth proportional to 761,139.42, 1,141,815.78 and 311,924.22 is: 467,930.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,139.42 : 1,141,815.78 = 311,924.22 : x
  2. Step 2: Convert to fraction form
    761,139.42/1,141,815.78 = 311,924.22/x
  3. Step 3: Cross multiply
    761,139.42x = 1,141,815.78 × 311,924.22
  4. Step 4: Simplify right side
    761,139.42x = 356,159,996,560.19
  5. Step 5: Solve for x
    x = 356,159,996,560.19/761,139.42
  6. Step 6: Final answer
    x = 467,930.04

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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.