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Finding the Fourth Proportional to 665,064.20, 998,222.70 and 349,747.40

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Solution

The fourth proportional to 665,064.20, 998,222.70 and 349,747.40 is: 524,950.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,064.20 : 998,222.70 = 349,747.40 : x
  2. Step 2: Convert to fraction form
    665,064.20/998,222.70 = 349,747.40/x
  3. Step 3: Cross multiply
    665,064.20x = 998,222.70 × 349,747.40
  4. Step 4: Simplify right side
    665,064.20x = 349,125,793,945.98
  5. Step 5: Solve for x
    x = 349,125,793,945.98/665,064.20
  6. Step 6: Final answer
    x = 524,950.51

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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.