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Finding the Fourth Proportional to 981,469.44, 1,354,428 and 551,750.40

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Solution

The fourth proportional to 981,469.44, 1,354,428 and 551,750.40 is: 761,415.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,469.44 : 1,354,428 = 551,750.40 : x
  2. Step 2: Convert to fraction form
    981,469.44/1,354,428 = 551,750.40/x
  3. Step 3: Cross multiply
    981,469.44x = 1,354,428 × 551,750.40
  4. Step 4: Simplify right side
    981,469.44x = 747,306,190,771.20
  5. Step 5: Solve for x
    x = 747,306,190,771.20/981,469.44
  6. Step 6: Final answer
    x = 761,415.65

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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.