Home / 815,820.20-1,223,730.30-695,097.80

Finding the Fourth Proportional to 815,820.20, 1,223,730.30 and 695,097.80

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Solution

The fourth proportional to 815,820.20, 1,223,730.30 and 695,097.80 is: 1,042,646.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,820.20 : 1,223,730.30 = 695,097.80 : x
  2. Step 2: Convert to fraction form
    815,820.20/1,223,730.30 = 695,097.80/x
  3. Step 3: Cross multiply
    815,820.20x = 1,223,730.30 × 695,097.80
  4. Step 4: Simplify right side
    815,820.20x = 850,612,239,323.34
  5. Step 5: Solve for x
    x = 850,612,239,323.34/815,820.20
  6. Step 6: Final answer
    x = 1,042,646.70

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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.