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Finding the Fourth Proportional to 1,266,764.18, 1,748,101.11 and 722,890.22

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Solution

The fourth proportional to 1,266,764.18, 1,748,101.11 and 722,890.22 is: 997,569.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,764.18 : 1,748,101.11 = 722,890.22 : x
  2. Step 2: Convert to fraction form
    1,266,764.18/1,748,101.11 = 722,890.22/x
  3. Step 3: Cross multiply
    1,266,764.18x = 1,748,101.11 × 722,890.22
  4. Step 4: Simplify right side
    1,266,764.18x = 1,263,685,195,990.14
  5. Step 5: Solve for x
    x = 1,263,685,195,990.14/1,266,764.18
  6. Step 6: Final answer
    x = 997,569.41

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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.