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Finding the Fourth Proportional to 491,444.61, 678,215.37 and 276,598.59

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Solution

The fourth proportional to 491,444.61, 678,215.37 and 276,598.59 is: 381,718.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,444.61 : 678,215.37 = 276,598.59 : x
  2. Step 2: Convert to fraction form
    491,444.61/678,215.37 = 276,598.59/x
  3. Step 3: Cross multiply
    491,444.61x = 678,215.37 × 276,598.59
  4. Step 4: Simplify right side
    491,444.61x = 187,593,415,058.33
  5. Step 5: Solve for x
    x = 187,593,415,058.33/491,444.61
  6. Step 6: Final answer
    x = 381,718.33

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1.5x scale

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.