Home / 1,278,980.20-1,921,839.90-710,813.80

Finding the Fourth Proportional to 1,278,980.20, 1,921,839.90 and 710,813.80

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Solution

The fourth proportional to 1,278,980.20, 1,921,839.90 and 710,813.80 is: 1,068,093.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,980.20 : 1,921,839.90 = 710,813.80 : x
  2. Step 2: Convert to fraction form
    1,278,980.20/1,921,839.90 = 710,813.80/x
  3. Step 3: Cross multiply
    1,278,980.20x = 1,921,839.90 × 710,813.80
  4. Step 4: Simplify right side
    1,278,980.20x = 1,366,070,322,310.62
  5. Step 5: Solve for x
    x = 1,366,070,322,310.62/1,278,980.20
  6. Step 6: Final answer
    x = 1,068,093.41

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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.