Home / 690,340.80-1,035,511.20-191,704.80

Finding the Fourth Proportional to 690,340.80, 1,035,511.20 and 191,704.80

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Solution

The fourth proportional to 690,340.80, 1,035,511.20 and 191,704.80 is: 287,557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,340.80 : 1,035,511.20 = 191,704.80 : x
  2. Step 2: Convert to fraction form
    690,340.80/1,035,511.20 = 191,704.80/x
  3. Step 3: Cross multiply
    690,340.80x = 1,035,511.20 × 191,704.80
  4. Step 4: Simplify right side
    690,340.80x = 198,512,467,493.76
  5. Step 5: Solve for x
    x = 198,512,467,493.76/690,340.80
  6. Step 6: Final answer
    x = 287,557.20

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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.