Home / 678,970.35-1,016,979.30-412,265.70

Finding the Fourth Proportional to 678,970.35, 1,016,979.30 and 412,265.70

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Solution

The fourth proportional to 678,970.35, 1,016,979.30 and 412,265.70 is: 617,502.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,970.35 : 1,016,979.30 = 412,265.70 : x
  2. Step 2: Convert to fraction form
    678,970.35/1,016,979.30 = 412,265.70/x
  3. Step 3: Cross multiply
    678,970.35x = 1,016,979.30 × 412,265.70
  4. Step 4: Simplify right side
    678,970.35x = 419,265,683,000.01
  5. Step 5: Solve for x
    x = 419,265,683,000.01/678,970.35
  6. Step 6: Final answer
    x = 617,502.20

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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.