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Finding the Fourth Proportional to 680,988.60, 1,021,480.14 and 207,672.58

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Solution

The fourth proportional to 680,988.60, 1,021,480.14 and 207,672.58 is: 311,508.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,988.60 : 1,021,480.14 = 207,672.58 : x
  2. Step 2: Convert to fraction form
    680,988.60/1,021,480.14 = 207,672.58/x
  3. Step 3: Cross multiply
    680,988.60x = 1,021,480.14 × 207,672.58
  4. Step 4: Simplify right side
    680,988.60x = 212,133,416,092.56
  5. Step 5: Solve for x
    x = 212,133,416,092.56/680,988.60
  6. Step 6: Final answer
    x = 311,508.03

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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.