Home / 678,652.80-1,017,979.20-662,906.40

Finding the Fourth Proportional to 678,652.80, 1,017,979.20 and 662,906.40

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Solution

The fourth proportional to 678,652.80, 1,017,979.20 and 662,906.40 is: 994,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,652.80 : 1,017,979.20 = 662,906.40 : x
  2. Step 2: Convert to fraction form
    678,652.80/1,017,979.20 = 662,906.40/x
  3. Step 3: Cross multiply
    678,652.80x = 1,017,979.20 × 662,906.40
  4. Step 4: Simplify right side
    678,652.80x = 674,824,926,746.88
  5. Step 5: Solve for x
    x = 674,824,926,746.88/678,652.80
  6. Step 6: Final answer
    x = 994,359.60

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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.