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Finding the Fourth Proportional to 686,348.48, 1,029,652.06 and 260,012

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Solution

The fourth proportional to 686,348.48, 1,029,652.06 and 260,012 is: 390,067.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,348.48 : 1,029,652.06 = 260,012 : x
  2. Step 2: Convert to fraction form
    686,348.48/1,029,652.06 = 260,012/x
  3. Step 3: Cross multiply
    686,348.48x = 1,029,652.06 × 260,012
  4. Step 4: Simplify right side
    686,348.48x = 267,721,891,424.72
  5. Step 5: Solve for x
    x = 267,721,891,424.72/686,348.48
  6. Step 6: Final answer
    x = 390,067.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.