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Finding the Fourth Proportional to 687,773.60, 1,030,785.60 and 332,021.60

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Solution

The fourth proportional to 687,773.60, 1,030,785.60 and 332,021.60 is: 497,610.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,773.60 : 1,030,785.60 = 332,021.60 : x
  2. Step 2: Convert to fraction form
    687,773.60/1,030,785.60 = 332,021.60/x
  3. Step 3: Cross multiply
    687,773.60x = 1,030,785.60 × 332,021.60
  4. Step 4: Simplify right side
    687,773.60x = 342,243,084,168.96
  5. Step 5: Solve for x
    x = 342,243,084,168.96/687,773.60
  6. Step 6: Final answer
    x = 497,610.09

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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.