Home / 811,407.50-1,215,667.82-691,866.08

Finding the Fourth Proportional to 811,407.50, 1,215,667.82 and 691,866.08

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Solution

The fourth proportional to 811,407.50, 1,215,667.82 and 691,866.08 is: 1,036,568.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,407.50 : 1,215,667.82 = 691,866.08 : x
  2. Step 2: Convert to fraction form
    811,407.50/1,215,667.82 = 691,866.08/x
  3. Step 3: Cross multiply
    811,407.50x = 1,215,667.82 × 691,866.08
  4. Step 4: Simplify right side
    811,407.50x = 841,079,329,205.55
  5. Step 5: Solve for x
    x = 841,079,329,205.55/811,407.50
  6. Step 6: Final answer
    x = 1,036,568.34

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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.