Home / 1,243,470.20-1,865,205.30-865,556.60

Finding the Fourth Proportional to 1,243,470.20, 1,865,205.30 and 865,556.60

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Solution

The fourth proportional to 1,243,470.20, 1,865,205.30 and 865,556.60 is: 1,298,334.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,470.20 : 1,865,205.30 = 865,556.60 : x
  2. Step 2: Convert to fraction form
    1,243,470.20/1,865,205.30 = 865,556.60/x
  3. Step 3: Cross multiply
    1,243,470.20x = 1,865,205.30 × 865,556.60
  4. Step 4: Simplify right side
    1,243,470.20x = 1,614,440,757,769.98
  5. Step 5: Solve for x
    x = 1,614,440,757,769.98/1,243,470.20
  6. Step 6: Final answer
    x = 1,298,334.90

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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.