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Finding the Fourth Proportional to 979,836.72, 1,352,070 and 550,164

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Solution

The fourth proportional to 979,836.72, 1,352,070 and 550,164 is: 759,167.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,836.72 : 1,352,070 = 550,164 : x
  2. Step 2: Convert to fraction form
    979,836.72/1,352,070 = 550,164/x
  3. Step 3: Cross multiply
    979,836.72x = 1,352,070 × 550,164
  4. Step 4: Simplify right side
    979,836.72x = 743,860,239,480
  5. Step 5: Solve for x
    x = 743,860,239,480/979,836.72
  6. Step 6: Final answer
    x = 759,167.55

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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.