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Finding the Fourth Proportional to 655,918.80, 983,878.20 and 550,942.80

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Solution

The fourth proportional to 655,918.80, 983,878.20 and 550,942.80 is: 826,414.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,918.80 : 983,878.20 = 550,942.80 : x
  2. Step 2: Convert to fraction form
    655,918.80/983,878.20 = 550,942.80/x
  3. Step 3: Cross multiply
    655,918.80x = 983,878.20 × 550,942.80
  4. Step 4: Simplify right side
    655,918.80x = 542,060,610,366.96
  5. Step 5: Solve for x
    x = 542,060,610,366.96/655,918.80
  6. Step 6: Final answer
    x = 826,414.20

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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.