Home / 1,128,523.56-1,557,362.40-645,099.12

Finding the Fourth Proportional to 1,128,523.56, 1,557,362.40 and 645,099.12

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Solution

The fourth proportional to 1,128,523.56, 1,557,362.40 and 645,099.12 is: 890,236.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,523.56 : 1,557,362.40 = 645,099.12 : x
  2. Step 2: Convert to fraction form
    1,128,523.56/1,557,362.40 = 645,099.12/x
  3. Step 3: Cross multiply
    1,128,523.56x = 1,557,362.40 × 645,099.12
  4. Step 4: Simplify right side
    1,128,523.56x = 1,004,653,113,761.09
  5. Step 5: Solve for x
    x = 1,004,653,113,761.09/1,128,523.56
  6. Step 6: Final answer
    x = 890,236.72

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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.