Home / 1,638,278.27-2,455,642.29-838,463.21

Finding the Fourth Proportional to 1,638,278.27, 2,455,642.29 and 838,463.21

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Solution

The fourth proportional to 1,638,278.27, 2,455,642.29 and 838,463.21 is: 1,256,786.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,278.27 : 2,455,642.29 = 838,463.21 : x
  2. Step 2: Convert to fraction form
    1,638,278.27/2,455,642.29 = 838,463.21/x
  3. Step 3: Cross multiply
    1,638,278.27x = 2,455,642.29 × 838,463.21
  4. Step 4: Simplify right side
    1,638,278.27x = 2,058,965,717,085.15
  5. Step 5: Solve for x
    x = 2,058,965,717,085.15/1,638,278.27
  6. Step 6: Final answer
    x = 1,256,786.32

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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.