Home / 860,857.80-1,291,286.70-577,422.60

Finding the Fourth Proportional to 860,857.80, 1,291,286.70 and 577,422.60

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Solution

The fourth proportional to 860,857.80, 1,291,286.70 and 577,422.60 is: 866,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,857.80 : 1,291,286.70 = 577,422.60 : x
  2. Step 2: Convert to fraction form
    860,857.80/1,291,286.70 = 577,422.60/x
  3. Step 3: Cross multiply
    860,857.80x = 1,291,286.70 × 577,422.60
  4. Step 4: Simplify right side
    860,857.80x = 745,618,123,659.42
  5. Step 5: Solve for x
    x = 745,618,123,659.42/860,857.80
  6. Step 6: Final answer
    x = 866,133.90

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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.