Home / 678,545.60-1,017,818.40-323,729.60

Finding the Fourth Proportional to 678,545.60, 1,017,818.40 and 323,729.60

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Solution

The fourth proportional to 678,545.60, 1,017,818.40 and 323,729.60 is: 485,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,545.60 : 1,017,818.40 = 323,729.60 : x
  2. Step 2: Convert to fraction form
    678,545.60/1,017,818.40 = 323,729.60/x
  3. Step 3: Cross multiply
    678,545.60x = 1,017,818.40 × 323,729.60
  4. Step 4: Simplify right side
    678,545.60x = 329,497,943,504.64
  5. Step 5: Solve for x
    x = 329,497,943,504.64/678,545.60
  6. Step 6: Final answer
    x = 485,594.40

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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.