Home / 1,208,172.35-1,667,284.08-664,343.21

Finding the Fourth Proportional to 1,208,172.35, 1,667,284.08 and 664,343.21

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Solution

The fourth proportional to 1,208,172.35, 1,667,284.08 and 664,343.21 is: 916,797.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,172.35 : 1,667,284.08 = 664,343.21 : x
  2. Step 2: Convert to fraction form
    1,208,172.35/1,667,284.08 = 664,343.21/x
  3. Step 3: Cross multiply
    1,208,172.35x = 1,667,284.08 × 664,343.21
  4. Step 4: Simplify right side
    1,208,172.35x = 1,107,648,857,689.10
  5. Step 5: Solve for x
    x = 1,107,648,857,689.10/1,208,172.35
  6. Step 6: Final answer
    x = 916,797.06

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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.