Home / 678,301.40-1,017,452.10-205,059.80

Finding the Fourth Proportional to 678,301.40, 1,017,452.10 and 205,059.80

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Solution

The fourth proportional to 678,301.40, 1,017,452.10 and 205,059.80 is: 307,589.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,301.40 : 1,017,452.10 = 205,059.80 : x
  2. Step 2: Convert to fraction form
    678,301.40/1,017,452.10 = 205,059.80/x
  3. Step 3: Cross multiply
    678,301.40x = 1,017,452.10 × 205,059.80
  4. Step 4: Simplify right side
    678,301.40x = 208,638,524,135.58
  5. Step 5: Solve for x
    x = 208,638,524,135.58/678,301.40
  6. Step 6: Final answer
    x = 307,589.70

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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.