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Finding the Fourth Proportional to 491,444.84, 678,215.70 and 276,598.82

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Solution

The fourth proportional to 491,444.84, 678,215.70 and 276,598.82 is: 381,718.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,444.84 : 678,215.70 = 276,598.82 : x
  2. Step 2: Convert to fraction form
    491,444.84/678,215.70 = 276,598.82/x
  3. Step 3: Cross multiply
    491,444.84x = 678,215.70 × 276,598.82
  4. Step 4: Simplify right side
    491,444.84x = 187,593,658,934.40
  5. Step 5: Solve for x
    x = 187,593,658,934.40/491,444.84
  6. Step 6: Final answer
    x = 381,718.65

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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.