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Finding the Fourth Proportional to 1,266,739.86, 1,748,226.08 and 722,956.89

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Solution

The fourth proportional to 1,266,739.86, 1,748,226.08 and 722,956.89 is: 997,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,739.86 : 1,748,226.08 = 722,956.89 : x
  2. Step 2: Convert to fraction form
    1,266,739.86/1,748,226.08 = 722,956.89/x
  3. Step 3: Cross multiply
    1,266,739.86x = 1,748,226.08 × 722,956.89
  4. Step 4: Simplify right side
    1,266,739.86x = 1,263,892,077,457.78
  5. Step 5: Solve for x
    x = 1,263,892,077,457.78/1,266,739.86
  6. Step 6: Final answer
    x = 997,751.88

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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.