Home / 678,000.40-1,015,834.20-441,221.20

Finding the Fourth Proportional to 678,000.40, 1,015,834.20 and 441,221.20

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Solution

The fourth proportional to 678,000.40, 1,015,834.20 and 441,221.20 is: 661,072.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,000.40 : 1,015,834.20 = 441,221.20 : x
  2. Step 2: Convert to fraction form
    678,000.40/1,015,834.20 = 441,221.20/x
  3. Step 3: Cross multiply
    678,000.40x = 1,015,834.20 × 441,221.20
  4. Step 4: Simplify right side
    678,000.40x = 448,207,584,725.04
  5. Step 5: Solve for x
    x = 448,207,584,725.04/678,000.40
  6. Step 6: Final answer
    x = 661,072.74

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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.