Home / 1,198,938.90-1,655,268.87-780,233.65

Finding the Fourth Proportional to 1,198,938.90, 1,655,268.87 and 780,233.65

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Solution

The fourth proportional to 1,198,938.90, 1,655,268.87 and 780,233.65 is: 1,077,199.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198,938.90 : 1,655,268.87 = 780,233.65 : x
  2. Step 2: Convert to fraction form
    1,198,938.90/1,655,268.87 = 780,233.65/x
  3. Step 3: Cross multiply
    1,198,938.90x = 1,655,268.87 × 780,233.65
  4. Step 4: Simplify right side
    1,198,938.90x = 1,291,496,472,171.48
  5. Step 5: Solve for x
    x = 1,291,496,472,171.48/1,198,938.90
  6. Step 6: Final answer
    x = 1,077,199.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.