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Finding the Fourth Proportional to 672,969.28, 928,798.32 and 431,524.48

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Solution

The fourth proportional to 672,969.28, 928,798.32 and 431,524.48 is: 595,568.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,969.28 : 928,798.32 = 431,524.48 : x
  2. Step 2: Convert to fraction form
    672,969.28/928,798.32 = 431,524.48/x
  3. Step 3: Cross multiply
    672,969.28x = 928,798.32 × 431,524.48
  4. Step 4: Simplify right side
    672,969.28x = 400,799,212,062.87
  5. Step 5: Solve for x
    x = 400,799,212,062.87/672,969.28
  6. Step 6: Final answer
    x = 595,568.36

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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.