Home / 678,559.20-1,017,838.80-627,237.60

Finding the Fourth Proportional to 678,559.20, 1,017,838.80 and 627,237.60

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Solution

The fourth proportional to 678,559.20, 1,017,838.80 and 627,237.60 is: 940,856.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,559.20 : 1,017,838.80 = 627,237.60 : x
  2. Step 2: Convert to fraction form
    678,559.20/1,017,838.80 = 627,237.60/x
  3. Step 3: Cross multiply
    678,559.20x = 1,017,838.80 × 627,237.60
  4. Step 4: Simplify right side
    678,559.20x = 638,426,766,098.88
  5. Step 5: Solve for x
    x = 638,426,766,098.88/678,559.20
  6. Step 6: Final answer
    x = 940,856.40

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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.