Home / 686,560.20-1,029,840.30-658,566.60

Finding the Fourth Proportional to 686,560.20, 1,029,840.30 and 658,566.60

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Solution

The fourth proportional to 686,560.20, 1,029,840.30 and 658,566.60 is: 987,849.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,560.20 : 1,029,840.30 = 658,566.60 : x
  2. Step 2: Convert to fraction form
    686,560.20/1,029,840.30 = 658,566.60/x
  3. Step 3: Cross multiply
    686,560.20x = 1,029,840.30 × 658,566.60
  4. Step 4: Simplify right side
    686,560.20x = 678,218,424,913.98
  5. Step 5: Solve for x
    x = 678,218,424,913.98/686,560.20
  6. Step 6: Final answer
    x = 987,849.90

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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.