Home / 1,085,121.66-1,628,047.15-761,247.32

Finding the Fourth Proportional to 1,085,121.66, 1,628,047.15 and 761,247.32

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Solution

The fourth proportional to 1,085,121.66, 1,628,047.15 and 761,247.32 is: 1,142,126.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085,121.66 : 1,628,047.15 = 761,247.32 : x
  2. Step 2: Convert to fraction form
    1,085,121.66/1,628,047.15 = 761,247.32/x
  3. Step 3: Cross multiply
    1,085,121.66x = 1,628,047.15 × 761,247.32
  4. Step 4: Simplify right side
    1,085,121.66x = 1,239,346,519,727.78
  5. Step 5: Solve for x
    x = 1,239,346,519,727.78/1,085,121.66
  6. Step 6: Final answer
    x = 1,142,126.79

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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.