Home / 1,326,028.20-1,988,171.01-642,734.25

Finding the Fourth Proportional to 1,326,028.20, 1,988,171.01 and 642,734.25

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Solution

The fourth proportional to 1,326,028.20, 1,988,171.01 and 642,734.25 is: 963,679.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,028.20 : 1,988,171.01 = 642,734.25 : x
  2. Step 2: Convert to fraction form
    1,326,028.20/1,988,171.01 = 642,734.25/x
  3. Step 3: Cross multiply
    1,326,028.20x = 1,988,171.01 × 642,734.25
  4. Step 4: Simplify right side
    1,326,028.20x = 1,277,865,602,984.09
  5. Step 5: Solve for x
    x = 1,277,865,602,984.09/1,326,028.20
  6. Step 6: Final answer
    x = 963,679.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.