Home / 858,408.10-1,287,612.15-659,731.30

Finding the Fourth Proportional to 858,408.10, 1,287,612.15 and 659,731.30

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Solution

The fourth proportional to 858,408.10, 1,287,612.15 and 659,731.30 is: 989,596.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,408.10 : 1,287,612.15 = 659,731.30 : x
  2. Step 2: Convert to fraction form
    858,408.10/1,287,612.15 = 659,731.30/x
  3. Step 3: Cross multiply
    858,408.10x = 1,287,612.15 × 659,731.30
  4. Step 4: Simplify right side
    858,408.10x = 849,478,037,615.30
  5. Step 5: Solve for x
    x = 849,478,037,615.30/858,408.10
  6. Step 6: Final answer
    x = 989,596.95

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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.