Home / 1,128,932.55-1,557,701.54-687,111.19

Finding the Fourth Proportional to 1,128,932.55, 1,557,701.54 and 687,111.19

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Solution

The fourth proportional to 1,128,932.55, 1,557,701.54 and 687,111.19 is: 948,076.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,932.55 : 1,557,701.54 = 687,111.19 : x
  2. Step 2: Convert to fraction form
    1,128,932.55/1,557,701.54 = 687,111.19/x
  3. Step 3: Cross multiply
    1,128,932.55x = 1,557,701.54 × 687,111.19
  4. Step 4: Simplify right side
    1,128,932.55x = 1,070,314,155,378.68
  5. Step 5: Solve for x
    x = 1,070,314,155,378.68/1,128,932.55
  6. Step 6: Final answer
    x = 948,076.26

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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.