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Finding the Fourth Proportional to 1,248,393.44, 1,721,214.48 and 1,018,717.44

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Solution

The fourth proportional to 1,248,393.44, 1,721,214.48 and 1,018,717.44 is: 1,404,550.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,393.44 : 1,721,214.48 = 1,018,717.44 : x
  2. Step 2: Convert to fraction form
    1,248,393.44/1,721,214.48 = 1,018,717.44/x
  3. Step 3: Cross multiply
    1,248,393.44x = 1,721,214.48 × 1,018,717.44
  4. Step 4: Simplify right side
    1,248,393.44x = 1,753,431,208,756.53
  5. Step 5: Solve for x
    x = 1,753,431,208,756.53/1,248,393.44
  6. Step 6: Final answer
    x = 1,404,550.16

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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.