Home / 1,638,278.52-2,455,642.66-838,463.46

Finding the Fourth Proportional to 1,638,278.52, 2,455,642.66 and 838,463.46

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Solution

The fourth proportional to 1,638,278.52, 2,455,642.66 and 838,463.46 is: 1,256,786.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,278.52 : 2,455,642.66 = 838,463.46 : x
  2. Step 2: Convert to fraction form
    1,638,278.52/2,455,642.66 = 838,463.46/x
  3. Step 3: Cross multiply
    1,638,278.52x = 2,455,642.66 × 838,463.46
  4. Step 4: Simplify right side
    1,638,278.52x = 2,058,966,641,227.20
  5. Step 5: Solve for x
    x = 2,058,966,641,227.20/1,638,278.52
  6. Step 6: Final answer
    x = 1,256,786.69

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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.