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Finding the Fourth Proportional to 1,266,780.96, 1,748,186.01 and 722,905.92

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Solution

The fourth proportional to 1,266,780.96, 1,748,186.01 and 722,905.92 is: 997,626.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,780.96 : 1,748,186.01 = 722,905.92 : x
  2. Step 2: Convert to fraction form
    1,266,780.96/1,748,186.01 = 722,905.92/x
  3. Step 3: Cross multiply
    1,266,780.96x = 1,748,186.01 × 722,905.92
  4. Step 4: Simplify right side
    1,266,780.96x = 1,263,774,015,890.18
  5. Step 5: Solve for x
    x = 1,263,774,015,890.18/1,266,780.96
  6. Step 6: Final answer
    x = 997,626.31

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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.