Home / 1,128,546.86-1,557,394.43-645,122.39

Finding the Fourth Proportional to 1,128,546.86, 1,557,394.43 and 645,122.39

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Solution

The fourth proportional to 1,128,546.86, 1,557,394.43 and 645,122.39 is: 890,268.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,546.86 : 1,557,394.43 = 645,122.39 : x
  2. Step 2: Convert to fraction form
    1,128,546.86/1,557,394.43 = 645,122.39/x
  3. Step 3: Cross multiply
    1,128,546.86x = 1,557,394.43 × 645,122.39
  4. Step 4: Simplify right side
    1,128,546.86x = 1,004,710,005,841.70
  5. Step 5: Solve for x
    x = 1,004,710,005,841.70/1,128,546.86
  6. Step 6: Final answer
    x = 890,268.76

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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.