Home / 811,748.79-1,217,610.43-279,274.43

Finding the Fourth Proportional to 811,748.79, 1,217,610.43 and 279,274.43

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Solution

The fourth proportional to 811,748.79, 1,217,610.43 and 279,274.43 is: 418,907.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,748.79 : 1,217,610.43 = 279,274.43 : x
  2. Step 2: Convert to fraction form
    811,748.79/1,217,610.43 = 279,274.43/x
  3. Step 3: Cross multiply
    811,748.79x = 1,217,610.43 × 279,274.43
  4. Step 4: Simplify right side
    811,748.79x = 340,047,461,146.15
  5. Step 5: Solve for x
    x = 340,047,461,146.15/811,748.79
  6. Step 6: Final answer
    x = 418,907.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.