Home / 678,356.60-1,017,534.90-324,062.60

Finding the Fourth Proportional to 678,356.60, 1,017,534.90 and 324,062.60

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Solution

The fourth proportional to 678,356.60, 1,017,534.90 and 324,062.60 is: 486,093.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,356.60 : 1,017,534.90 = 324,062.60 : x
  2. Step 2: Convert to fraction form
    678,356.60/1,017,534.90 = 324,062.60/x
  3. Step 3: Cross multiply
    678,356.60x = 1,017,534.90 × 324,062.60
  4. Step 4: Simplify right side
    678,356.60x = 329,745,005,284.74
  5. Step 5: Solve for x
    x = 329,745,005,284.74/678,356.60
  6. Step 6: Final answer
    x = 486,093.90

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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.