Home / 678,660.04-1,016,439.18-323,923.06

Finding the Fourth Proportional to 678,660.04, 1,016,439.18 and 323,923.06

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Solution

The fourth proportional to 678,660.04, 1,016,439.18 and 323,923.06 is: 485,144.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,660.04 : 1,016,439.18 = 323,923.06 : x
  2. Step 2: Convert to fraction form
    678,660.04/1,016,439.18 = 323,923.06/x
  3. Step 3: Cross multiply
    678,660.04x = 1,016,439.18 × 323,923.06
  4. Step 4: Simplify right side
    678,660.04x = 329,248,089,489.49
  5. Step 5: Solve for x
    x = 329,248,089,489.49/678,660.04
  6. Step 6: Final answer
    x = 485,144.36

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Half scale
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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.