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Finding the Fourth Proportional to 491,444.71, 678,215.52 and 276,598.69

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Solution

The fourth proportional to 491,444.71, 678,215.52 and 276,598.69 is: 381,718.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,444.71 : 678,215.52 = 276,598.69 : x
  2. Step 2: Convert to fraction form
    491,444.71/678,215.52 = 276,598.69/x
  3. Step 3: Cross multiply
    491,444.71x = 678,215.52 × 276,598.69
  4. Step 4: Simplify right side
    491,444.71x = 187,593,524,369.67
  5. Step 5: Solve for x
    x = 187,593,524,369.67/491,444.71
  6. Step 6: Final answer
    x = 381,718.47

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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.