Home / 690,647.64-1,036,131.73-217,320.70

Finding the Fourth Proportional to 690,647.64, 1,036,131.73 and 217,320.70

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Solution

The fourth proportional to 690,647.64, 1,036,131.73 and 217,320.70 is: 326,031.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,647.64 : 1,036,131.73 = 217,320.70 : x
  2. Step 2: Convert to fraction form
    690,647.64/1,036,131.73 = 217,320.70/x
  3. Step 3: Cross multiply
    690,647.64x = 1,036,131.73 × 217,320.70
  4. Step 4: Simplify right side
    690,647.64x = 225,172,871,769.21
  5. Step 5: Solve for x
    x = 225,172,871,769.21/690,647.64
  6. Step 6: Final answer
    x = 326,031.48

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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.