Home / 809,297.80-1,117,278.30-487,087

Finding the Fourth Proportional to 809,297.80, 1,117,278.30 and 487,087

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Solution

The fourth proportional to 809,297.80, 1,117,278.30 and 487,087 is: 672,449.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,297.80 : 1,117,278.30 = 487,087 : x
  2. Step 2: Convert to fraction form
    809,297.80/1,117,278.30 = 487,087/x
  3. Step 3: Cross multiply
    809,297.80x = 1,117,278.30 × 487,087
  4. Step 4: Simplify right side
    809,297.80x = 544,211,735,312.10
  5. Step 5: Solve for x
    x = 544,211,735,312.10/809,297.80
  6. Step 6: Final answer
    x = 672,449.30

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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.