Home / 1,129,832-1,558,788.81-639,734.66

Finding the Fourth Proportional to 1,129,832, 1,558,788.81 and 639,734.66

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Solution

The fourth proportional to 1,129,832, 1,558,788.81 and 639,734.66 is: 882,619.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,832 : 1,558,788.81 = 639,734.66 : x
  2. Step 2: Convert to fraction form
    1,129,832/1,558,788.81 = 639,734.66/x
  3. Step 3: Cross multiply
    1,129,832x = 1,558,788.81 × 639,734.66
  4. Step 4: Simplify right side
    1,129,832x = 997,211,229,377.16
  5. Step 5: Solve for x
    x = 997,211,229,377.16/1,129,832
  6. Step 6: Final answer
    x = 882,619.03

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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.