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Finding the Fourth Proportional to 845,143.44, 1,264,857.48 and 822,398.64

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Solution

The fourth proportional to 845,143.44, 1,264,857.48 and 822,398.64 is: 1,230,817.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,143.44 : 1,264,857.48 = 822,398.64 : x
  2. Step 2: Convert to fraction form
    845,143.44/1,264,857.48 = 822,398.64/x
  3. Step 3: Cross multiply
    845,143.44x = 1,264,857.48 × 822,398.64
  4. Step 4: Simplify right side
    845,143.44x = 1,040,217,071,345.83
  5. Step 5: Solve for x
    x = 1,040,217,071,345.83/845,143.44
  6. Step 6: Final answer
    x = 1,230,817.19

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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.