Home / 1,210,913.27-1,671,191.58-667,104.78

Finding the Fourth Proportional to 1,210,913.27, 1,671,191.58 and 667,104.78

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Solution

The fourth proportional to 1,210,913.27, 1,671,191.58 and 667,104.78 is: 920,676.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,913.27 : 1,671,191.58 = 667,104.78 : x
  2. Step 2: Convert to fraction form
    1,210,913.27/1,671,191.58 = 667,104.78/x
  3. Step 3: Cross multiply
    1,210,913.27x = 1,671,191.58 × 667,104.78
  4. Step 4: Simplify right side
    1,210,913.27x = 1,114,859,891,313.75
  5. Step 5: Solve for x
    x = 1,114,859,891,313.75/1,210,913.27
  6. Step 6: Final answer
    x = 920,676.91

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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.