Home / 1,186,187.94-1,637,338.59-721,040.18

Finding the Fourth Proportional to 1,186,187.94, 1,637,338.59 and 721,040.18

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Solution

The fourth proportional to 1,186,187.94, 1,637,338.59 and 721,040.18 is: 995,278.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,187.94 : 1,637,338.59 = 721,040.18 : x
  2. Step 2: Convert to fraction form
    1,186,187.94/1,637,338.59 = 721,040.18/x
  3. Step 3: Cross multiply
    1,186,187.94x = 1,637,338.59 × 721,040.18
  4. Step 4: Simplify right side
    1,186,187.94x = 1,180,586,903,467.85
  5. Step 5: Solve for x
    x = 1,180,586,903,467.85/1,186,187.94
  6. Step 6: Final answer
    x = 995,278.12

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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.