Home / 1,128,933.31-1,557,702.60-687,111.95

Finding the Fourth Proportional to 1,128,933.31, 1,557,702.60 and 687,111.95

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Solution

The fourth proportional to 1,128,933.31, 1,557,702.60 and 687,111.95 is: 948,077.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,933.31 : 1,557,702.60 = 687,111.95 : x
  2. Step 2: Convert to fraction form
    1,128,933.31/1,557,702.60 = 687,111.95/x
  3. Step 3: Cross multiply
    1,128,933.31x = 1,557,702.60 × 687,111.95
  4. Step 4: Simplify right side
    1,128,933.31x = 1,070,316,070,133.14
  5. Step 5: Solve for x
    x = 1,070,316,070,133.14/1,128,933.31
  6. Step 6: Final answer
    x = 948,077.32

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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.