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Finding the Fourth Proportional to 866,793.32, 1,299,866.70 and 298,013.39

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Solution

The fourth proportional to 866,793.32, 1,299,866.70 and 298,013.39 is: 446,908.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,793.32 : 1,299,866.70 = 298,013.39 : x
  2. Step 2: Convert to fraction form
    866,793.32/1,299,866.70 = 298,013.39/x
  3. Step 3: Cross multiply
    866,793.32x = 1,299,866.70 × 298,013.39
  4. Step 4: Simplify right side
    866,793.32x = 387,377,681,307.83
  5. Step 5: Solve for x
    x = 387,377,681,307.83/866,793.32
  6. Step 6: Final answer
    x = 446,908.94

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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.