Home / 771,205.60-1,156,117.20-687,224.80

Finding the Fourth Proportional to 771,205.60, 1,156,117.20 and 687,224.80

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Solution

The fourth proportional to 771,205.60, 1,156,117.20 and 687,224.80 is: 1,030,221.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,205.60 : 1,156,117.20 = 687,224.80 : x
  2. Step 2: Convert to fraction form
    771,205.60/1,156,117.20 = 687,224.80/x
  3. Step 3: Cross multiply
    771,205.60x = 1,156,117.20 × 687,224.80
  4. Step 4: Simplify right side
    771,205.60x = 794,512,411,546.56
  5. Step 5: Solve for x
    x = 794,512,411,546.56/771,205.60
  6. Step 6: Final answer
    x = 1,030,221.27

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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.