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Finding the Fourth Proportional to 1,260,706, 1,739,774.28 and 687,748.48

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Solution

The fourth proportional to 1,260,706, 1,739,774.28 and 687,748.48 is: 949,092.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,706 : 1,739,774.28 = 687,748.48 : x
  2. Step 2: Convert to fraction form
    1,260,706/1,739,774.28 = 687,748.48/x
  3. Step 3: Cross multiply
    1,260,706x = 1,739,774.28 × 687,748.48
  4. Step 4: Simplify right side
    1,260,706x = 1,196,527,116,613.09
  5. Step 5: Solve for x
    x = 1,196,527,116,613.09/1,260,706
  6. Step 6: Final answer
    x = 949,092.90

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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.