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Finding the Fourth Proportional to 663,312.05, 995,353.79 and 279,032.74

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Solution

The fourth proportional to 663,312.05, 995,353.79 and 279,032.74 is: 418,711.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,312.05 : 995,353.79 = 279,032.74 : x
  2. Step 2: Convert to fraction form
    663,312.05/995,353.79 = 279,032.74/x
  3. Step 3: Cross multiply
    663,312.05x = 995,353.79 × 279,032.74
  4. Step 4: Simplify right side
    663,312.05x = 277,736,292,804.70
  5. Step 5: Solve for x
    x = 277,736,292,804.70/663,312.05
  6. Step 6: Final answer
    x = 418,711.36

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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.