Home / 686,625.20-1,029,937.80-658,631.60

Finding the Fourth Proportional to 686,625.20, 1,029,937.80 and 658,631.60

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Solution

The fourth proportional to 686,625.20, 1,029,937.80 and 658,631.60 is: 987,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,625.20 : 1,029,937.80 = 658,631.60 : x
  2. Step 2: Convert to fraction form
    686,625.20/1,029,937.80 = 658,631.60/x
  3. Step 3: Cross multiply
    686,625.20x = 1,029,937.80 × 658,631.60
  4. Step 4: Simplify right side
    686,625.20x = 678,349,581,114.48
  5. Step 5: Solve for x
    x = 678,349,581,114.48/686,625.20
  6. Step 6: Final answer
    x = 987,947.40

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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.