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Finding the Fourth Proportional to 874,605.66, 1,206,543.22 and 511,804.90

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Solution

The fourth proportional to 874,605.66, 1,206,543.22 and 511,804.90 is: 706,049.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,605.66 : 1,206,543.22 = 511,804.90 : x
  2. Step 2: Convert to fraction form
    874,605.66/1,206,543.22 = 511,804.90/x
  3. Step 3: Cross multiply
    874,605.66x = 1,206,543.22 × 511,804.90
  4. Step 4: Simplify right side
    874,605.66x = 617,514,732,057.78
  5. Step 5: Solve for x
    x = 617,514,732,057.78/874,605.66
  6. Step 6: Final answer
    x = 706,049.32

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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.