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Finding the Fourth Proportional to 979,800.60, 1,352,020.32 and 550,128

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Solution

The fourth proportional to 979,800.60, 1,352,020.32 and 550,128 is: 759,117.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,800.60 : 1,352,020.32 = 550,128 : x
  2. Step 2: Convert to fraction form
    979,800.60/1,352,020.32 = 550,128/x
  3. Step 3: Cross multiply
    979,800.60x = 1,352,020.32 × 550,128
  4. Step 4: Simplify right side
    979,800.60x = 743,784,234,600.96
  5. Step 5: Solve for x
    x = 743,784,234,600.96/979,800.60
  6. Step 6: Final answer
    x = 759,117.96

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1.5x scale

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.