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Finding the Fourth Proportional to 1,266,789.79, 1,748,295.56 and 723,007.92

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Solution

The fourth proportional to 1,266,789.79, 1,748,295.56 and 723,007.92 is: 997,822.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,789.79 : 1,748,295.56 = 723,007.92 : x
  2. Step 2: Convert to fraction form
    1,266,789.79/1,748,295.56 = 723,007.92/x
  3. Step 3: Cross multiply
    1,266,789.79x = 1,748,295.56 × 723,007.92
  4. Step 4: Simplify right side
    1,266,789.79x = 1,264,031,536,380.84
  5. Step 5: Solve for x
    x = 1,264,031,536,380.84/1,266,789.79
  6. Step 6: Final answer
    x = 997,822.64

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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.