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Finding the Fourth Proportional to 499,912.70, 689,877.54 and 270,469.22

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Solution

The fourth proportional to 499,912.70, 689,877.54 and 270,469.22 is: 373,246.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,912.70 : 689,877.54 = 270,469.22 : x
  2. Step 2: Convert to fraction form
    499,912.70/689,877.54 = 270,469.22/x
  3. Step 3: Cross multiply
    499,912.70x = 689,877.54 × 270,469.22
  4. Step 4: Simplify right side
    499,912.70x = 186,590,636,689.93
  5. Step 5: Solve for x
    x = 186,590,636,689.93/499,912.70
  6. Step 6: Final answer
    x = 373,246.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.