Home / 1,187,220.47-1,638,736.29-757,499.87

Finding the Fourth Proportional to 1,187,220.47, 1,638,736.29 and 757,499.87

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Solution

The fourth proportional to 1,187,220.47, 1,638,736.29 and 757,499.87 is: 1,045,587.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,220.47 : 1,638,736.29 = 757,499.87 : x
  2. Step 2: Convert to fraction form
    1,187,220.47/1,638,736.29 = 757,499.87/x
  3. Step 3: Cross multiply
    1,187,220.47x = 1,638,736.29 × 757,499.87
  4. Step 4: Simplify right side
    1,187,220.47x = 1,241,342,530,736.12
  5. Step 5: Solve for x
    x = 1,241,342,530,736.12/1,187,220.47
  6. Step 6: Final answer
    x = 1,045,587.21

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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.