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Finding the Fourth Proportional to 808,680.60, 1,213,020.90 and 740,446.20

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Solution

The fourth proportional to 808,680.60, 1,213,020.90 and 740,446.20 is: 1,110,669.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,680.60 : 1,213,020.90 = 740,446.20 : x
  2. Step 2: Convert to fraction form
    808,680.60/1,213,020.90 = 740,446.20/x
  3. Step 3: Cross multiply
    808,680.60x = 1,213,020.90 × 740,446.20
  4. Step 4: Simplify right side
    808,680.60x = 898,176,715,925.58
  5. Step 5: Solve for x
    x = 898,176,715,925.58/808,680.60
  6. Step 6: Final answer
    x = 1,110,669.30

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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.