Home / 678,283.80-1,017,425.70-412,565.40

Finding the Fourth Proportional to 678,283.80, 1,017,425.70 and 412,565.40

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Solution

The fourth proportional to 678,283.80, 1,017,425.70 and 412,565.40 is: 618,848.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,283.80 : 1,017,425.70 = 412,565.40 : x
  2. Step 2: Convert to fraction form
    678,283.80/1,017,425.70 = 412,565.40/x
  3. Step 3: Cross multiply
    678,283.80x = 1,017,425.70 × 412,565.40
  4. Step 4: Simplify right side
    678,283.80x = 419,754,640,890.78
  5. Step 5: Solve for x
    x = 419,754,640,890.78/678,283.80
  6. Step 6: Final answer
    x = 618,848.10

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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.