Home / 1,153,420.29-1,729,145.21-815,397.57

Finding the Fourth Proportional to 1,153,420.29, 1,729,145.21 and 815,397.57

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Solution

The fourth proportional to 1,153,420.29, 1,729,145.21 and 815,397.57 is: 1,222,399.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153,420.29 : 1,729,145.21 = 815,397.57 : x
  2. Step 2: Convert to fraction form
    1,153,420.29/1,729,145.21 = 815,397.57/x
  3. Step 3: Cross multiply
    1,153,420.29x = 1,729,145.21 × 815,397.57
  4. Step 4: Simplify right side
    1,153,420.29x = 1,409,940,798,334.15
  5. Step 5: Solve for x
    x = 1,409,940,798,334.15/1,153,420.29
  6. Step 6: Final answer
    x = 1,222,399.86

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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.