Home / 761,344.68-1,142,025.10-311,950.20

Finding the Fourth Proportional to 761,344.68, 1,142,025.10 and 311,950.20

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Solution

The fourth proportional to 761,344.68, 1,142,025.10 and 311,950.20 is: 467,928.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,344.68 : 1,142,025.10 = 311,950.20 : x
  2. Step 2: Convert to fraction form
    761,344.68/1,142,025.10 = 311,950.20/x
  3. Step 3: Cross multiply
    761,344.68x = 1,142,025.10 × 311,950.20
  4. Step 4: Simplify right side
    761,344.68x = 356,254,958,350.02
  5. Step 5: Solve for x
    x = 356,254,958,350.02/761,344.68
  6. Step 6: Final answer
    x = 467,928.61

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Half scale
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Double scale
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Similar ratio
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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.