Home / 811,616.11-1,217,411.85-279,141.75

Finding the Fourth Proportional to 811,616.11, 1,217,411.85 and 279,141.75

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Solution

The fourth proportional to 811,616.11, 1,217,411.85 and 279,141.75 is: 418,708.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,616.11 : 1,217,411.85 = 279,141.75 : x
  2. Step 2: Convert to fraction form
    811,616.11/1,217,411.85 = 279,141.75/x
  3. Step 3: Cross multiply
    811,616.11x = 1,217,411.85 × 279,141.75
  4. Step 4: Simplify right side
    811,616.11x = 339,830,474,279.74
  5. Step 5: Solve for x
    x = 339,830,474,279.74/811,616.11
  6. Step 6: Final answer
    x = 418,708.39

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1.5x scale

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.