Home / 771,202.60-1,156,112.70-687,221.80

Finding the Fourth Proportional to 771,202.60, 1,156,112.70 and 687,221.80

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Solution

The fourth proportional to 771,202.60, 1,156,112.70 and 687,221.80 is: 1,030,216.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,202.60 : 1,156,112.70 = 687,221.80 : x
  2. Step 2: Convert to fraction form
    771,202.60/1,156,112.70 = 687,221.80/x
  3. Step 3: Cross multiply
    771,202.60x = 1,156,112.70 × 687,221.80
  4. Step 4: Simplify right side
    771,202.60x = 794,505,850,696.86
  5. Step 5: Solve for x
    x = 794,505,850,696.86/771,202.60
  6. Step 6: Final answer
    x = 1,030,216.77

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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.