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Finding the Fourth Proportional to 491,304.17, 677,998.53 and 276,444.51

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Solution

The fourth proportional to 491,304.17, 677,998.53 and 276,444.51 is: 381,492.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,304.17 : 677,998.53 = 276,444.51 : x
  2. Step 2: Convert to fraction form
    491,304.17/677,998.53 = 276,444.51/x
  3. Step 3: Cross multiply
    491,304.17x = 677,998.53 × 276,444.51
  4. Step 4: Simplify right side
    491,304.17x = 187,428,971,406.57
  5. Step 5: Solve for x
    x = 187,428,971,406.57/491,304.17
  6. Step 6: Final answer
    x = 381,492.74

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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.