Home / 747,679.60-1,121,519.40-689,942.80

Finding the Fourth Proportional to 747,679.60, 1,121,519.40 and 689,942.80

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Solution

The fourth proportional to 747,679.60, 1,121,519.40 and 689,942.80 is: 1,034,914.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,679.60 : 1,121,519.40 = 689,942.80 : x
  2. Step 2: Convert to fraction form
    747,679.60/1,121,519.40 = 689,942.80/x
  3. Step 3: Cross multiply
    747,679.60x = 1,121,519.40 × 689,942.80
  4. Step 4: Simplify right side
    747,679.60x = 773,784,235,090.32
  5. Step 5: Solve for x
    x = 773,784,235,090.32/747,679.60
  6. Step 6: Final answer
    x = 1,034,914.20

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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.