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Finding the Fourth Proportional to 874,879.72, 1,207,334.02 and 472,471.72

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Solution

The fourth proportional to 874,879.72, 1,207,334.02 and 472,471.72 is: 652,010.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,879.72 : 1,207,334.02 = 472,471.72 : x
  2. Step 2: Convert to fraction form
    874,879.72/1,207,334.02 = 472,471.72/x
  3. Step 3: Cross multiply
    874,879.72x = 1,207,334.02 × 472,471.72
  4. Step 4: Simplify right side
    874,879.72x = 570,431,181,043.91
  5. Step 5: Solve for x
    x = 570,431,181,043.91/874,879.72
  6. Step 6: Final answer
    x = 652,010.98

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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.