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Finding the Fourth Proportional to 1,795,672.33, 2,478,080.39 and 979,928.57

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Solution

The fourth proportional to 1,795,672.33, 2,478,080.39 and 979,928.57 is: 1,352,330.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,795,672.33 : 2,478,080.39 = 979,928.57 : x
  2. Step 2: Convert to fraction form
    1,795,672.33/2,478,080.39 = 979,928.57/x
  3. Step 3: Cross multiply
    1,795,672.33x = 2,478,080.39 × 979,928.57
  4. Step 4: Simplify right side
    1,795,672.33x = 2,428,341,771,692.83
  5. Step 5: Solve for x
    x = 2,428,341,771,692.83/1,795,672.33
  6. Step 6: Final answer
    x = 1,352,330.12

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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.