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Finding the Fourth Proportional to 654,625.60, 981,938.40 and 551,982.40

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Solution

The fourth proportional to 654,625.60, 981,938.40 and 551,982.40 is: 827,973.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,625.60 : 981,938.40 = 551,982.40 : x
  2. Step 2: Convert to fraction form
    654,625.60/981,938.40 = 551,982.40/x
  3. Step 3: Cross multiply
    654,625.60x = 981,938.40 × 551,982.40
  4. Step 4: Simplify right side
    654,625.60x = 542,012,714,684.16
  5. Step 5: Solve for x
    x = 542,012,714,684.16/654,625.60
  6. Step 6: Final answer
    x = 827,973.60

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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.