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Finding the Fourth Proportional to 491,676.89, 678,526.88 and 276,824.79

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Solution

The fourth proportional to 491,676.89, 678,526.88 and 276,824.79 is: 382,025.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,676.89 : 678,526.88 = 276,824.79 : x
  2. Step 2: Convert to fraction form
    491,676.89/678,526.88 = 276,824.79/x
  3. Step 3: Cross multiply
    491,676.89x = 678,526.88 × 276,824.79
  4. Step 4: Simplify right side
    491,676.89x = 187,833,059,681.23
  5. Step 5: Solve for x
    x = 187,833,059,681.23/491,676.89
  6. Step 6: Final answer
    x = 382,025.40

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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.