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Finding the Fourth Proportional to 1,266,903.09, 1,748,326.68 and 693,963.90

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Solution

The fourth proportional to 1,266,903.09, 1,748,326.68 and 693,963.90 is: 957,670.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,903.09 : 1,748,326.68 = 693,963.90 : x
  2. Step 2: Convert to fraction form
    1,266,903.09/1,748,326.68 = 693,963.90/x
  3. Step 3: Cross multiply
    1,266,903.09x = 1,748,326.68 × 693,963.90
  4. Step 4: Simplify right side
    1,266,903.09x = 1,213,275,601,326.85
  5. Step 5: Solve for x
    x = 1,213,275,601,326.85/1,266,903.09
  6. Step 6: Final answer
    x = 957,670.41

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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.