Home / 678,542.80-1,017,814.20-412,824.40

Finding the Fourth Proportional to 678,542.80, 1,017,814.20 and 412,824.40

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Solution

The fourth proportional to 678,542.80, 1,017,814.20 and 412,824.40 is: 619,236.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,542.80 : 1,017,814.20 = 412,824.40 : x
  2. Step 2: Convert to fraction form
    678,542.80/1,017,814.20 = 412,824.40/x
  3. Step 3: Cross multiply
    678,542.80x = 1,017,814.20 × 412,824.40
  4. Step 4: Simplify right side
    678,542.80x = 420,178,536,426.48
  5. Step 5: Solve for x
    x = 420,178,536,426.48/678,542.80
  6. Step 6: Final answer
    x = 619,236.60

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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.