Home / 861,870.45-1,292,802.20-262,829.88

Finding the Fourth Proportional to 861,870.45, 1,292,802.20 and 262,829.88

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Solution

The fourth proportional to 861,870.45, 1,292,802.20 and 262,829.88 is: 394,243.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,870.45 : 1,292,802.20 = 262,829.88 : x
  2. Step 2: Convert to fraction form
    861,870.45/1,292,802.20 = 262,829.88/x
  3. Step 3: Cross multiply
    861,870.45x = 1,292,802.20 × 262,829.88
  4. Step 4: Simplify right side
    861,870.45x = 339,787,045,775.59
  5. Step 5: Solve for x
    x = 339,787,045,775.59/861,870.45
  6. Step 6: Final answer
    x = 394,243.76

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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.