Home / 753,886.70-1,040,371.72-409,722.66

Finding the Fourth Proportional to 753,886.70, 1,040,371.72 and 409,722.66

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Solution

The fourth proportional to 753,886.70, 1,040,371.72 and 409,722.66 is: 565,421.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,886.70 : 1,040,371.72 = 409,722.66 : x
  2. Step 2: Convert to fraction form
    753,886.70/1,040,371.72 = 409,722.66/x
  3. Step 3: Cross multiply
    753,886.70x = 1,040,371.72 × 409,722.66
  4. Step 4: Simplify right side
    753,886.70x = 426,263,868,507.18
  5. Step 5: Solve for x
    x = 426,263,868,507.18/753,886.70
  6. Step 6: Final answer
    x = 565,421.66

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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.