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Finding the Fourth Proportional to 1,266,713.64, 1,748,067.48 and 685,943.10

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Solution

The fourth proportional to 1,266,713.64, 1,748,067.48 and 685,943.10 is: 946,602.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,713.64 : 1,748,067.48 = 685,943.10 : x
  2. Step 2: Convert to fraction form
    1,266,713.64/1,748,067.48 = 685,943.10/x
  3. Step 3: Cross multiply
    1,266,713.64x = 1,748,067.48 × 685,943.10
  4. Step 4: Simplify right side
    1,266,713.64x = 1,199,074,826,240.39
  5. Step 5: Solve for x
    x = 1,199,074,826,240.39/1,266,713.64
  6. Step 6: Final answer
    x = 946,602.92

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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.