Home / 1,211,652.64-1,672,012.42-667,786.74

Finding the Fourth Proportional to 1,211,652.64, 1,672,012.42 and 667,786.74

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Solution

The fourth proportional to 1,211,652.64, 1,672,012.42 and 667,786.74 is: 921,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,652.64 : 1,672,012.42 = 667,786.74 : x
  2. Step 2: Convert to fraction form
    1,211,652.64/1,672,012.42 = 667,786.74/x
  3. Step 3: Cross multiply
    1,211,652.64x = 1,672,012.42 × 667,786.74
  4. Step 4: Simplify right side
    1,211,652.64x = 1,116,547,723,191.31
  5. Step 5: Solve for x
    x = 1,116,547,723,191.31/1,211,652.64
  6. Step 6: Final answer
    x = 921,508.10

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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.