Home / 858,425.60-1,287,638.40-659,748.80

Finding the Fourth Proportional to 858,425.60, 1,287,638.40 and 659,748.80

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Solution

The fourth proportional to 858,425.60, 1,287,638.40 and 659,748.80 is: 989,623.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,425.60 : 1,287,638.40 = 659,748.80 : x
  2. Step 2: Convert to fraction form
    858,425.60/1,287,638.40 = 659,748.80/x
  3. Step 3: Cross multiply
    858,425.60x = 1,287,638.40 × 659,748.80
  4. Step 4: Simplify right side
    858,425.60x = 849,517,889,233.92
  5. Step 5: Solve for x
    x = 849,517,889,233.92/858,425.60
  6. Step 6: Final answer
    x = 989,623.20

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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.