Home / 678,532.80-1,017,799.20-442,336.80

Finding the Fourth Proportional to 678,532.80, 1,017,799.20 and 442,336.80

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Solution

The fourth proportional to 678,532.80, 1,017,799.20 and 442,336.80 is: 663,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,532.80 : 1,017,799.20 = 442,336.80 : x
  2. Step 2: Convert to fraction form
    678,532.80/1,017,799.20 = 442,336.80/x
  3. Step 3: Cross multiply
    678,532.80x = 1,017,799.20 × 442,336.80
  4. Step 4: Simplify right side
    678,532.80x = 450,210,041,170.56
  5. Step 5: Solve for x
    x = 450,210,041,170.56/678,532.80
  6. Step 6: Final answer
    x = 663,505.20

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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.