Home / 821,916.21-1,134,734.87-516,254.21

Finding the Fourth Proportional to 821,916.21, 1,134,734.87 and 516,254.21

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Solution

The fourth proportional to 821,916.21, 1,134,734.87 and 516,254.21 is: 712,738.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,916.21 : 1,134,734.87 = 516,254.21 : x
  2. Step 2: Convert to fraction form
    821,916.21/1,134,734.87 = 516,254.21/x
  3. Step 3: Cross multiply
    821,916.21x = 1,134,734.87 × 516,254.21
  4. Step 4: Simplify right side
    821,916.21x = 585,811,653,743.52
  5. Step 5: Solve for x
    x = 585,811,653,743.52/821,916.21
  6. Step 6: Final answer
    x = 712,738.89

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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.