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Finding the Fourth Proportional to 491,443.71, 678,214.14 and 276,597.69

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Solution

The fourth proportional to 491,443.71, 678,214.14 and 276,597.69 is: 381,717.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,443.71 : 678,214.14 = 276,597.69 : x
  2. Step 2: Convert to fraction form
    491,443.71/678,214.14 = 276,597.69/x
  3. Step 3: Cross multiply
    491,443.71x = 678,214.14 × 276,597.69
  4. Step 4: Simplify right side
    491,443.71x = 187,592,464,449.34
  5. Step 5: Solve for x
    x = 187,592,464,449.34/491,443.71
  6. Step 6: Final answer
    x = 381,717.09

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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.