Home / 764,939.80-1,147,409.70-315,511.30

Finding the Fourth Proportional to 764,939.80, 1,147,409.70 and 315,511.30

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Solution

The fourth proportional to 764,939.80, 1,147,409.70 and 315,511.30 is: 473,266.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,939.80 : 1,147,409.70 = 315,511.30 : x
  2. Step 2: Convert to fraction form
    764,939.80/1,147,409.70 = 315,511.30/x
  3. Step 3: Cross multiply
    764,939.80x = 1,147,409.70 × 315,511.30
  4. Step 4: Simplify right side
    764,939.80x = 362,020,726,079.61
  5. Step 5: Solve for x
    x = 362,020,726,079.61/764,939.80
  6. Step 6: Final answer
    x = 473,266.95

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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.