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Finding the Fourth Proportional to 1,955,051.55, 2,928,759.53 and 928,921.55

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Solution

The fourth proportional to 1,955,051.55, 2,928,759.53 and 928,921.55 is: 1,391,568.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955,051.55 : 2,928,759.53 = 928,921.55 : x
  2. Step 2: Convert to fraction form
    1,955,051.55/2,928,759.53 = 928,921.55/x
  3. Step 3: Cross multiply
    1,955,051.55x = 2,928,759.53 × 928,921.55
  4. Step 4: Simplify right side
    1,955,051.55x = 2,720,587,822,896.47
  5. Step 5: Solve for x
    x = 2,720,587,822,896.47/1,955,051.55
  6. Step 6: Final answer
    x = 1,391,568.33

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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.