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Finding the Fourth Proportional to 706,676.40, 1,060,040.20 and 208,090.80

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Solution

The fourth proportional to 706,676.40, 1,060,040.20 and 208,090.80 is: 312,143.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,676.40 : 1,060,040.20 = 208,090.80 : x
  2. Step 2: Convert to fraction form
    706,676.40/1,060,040.20 = 208,090.80/x
  3. Step 3: Cross multiply
    706,676.40x = 1,060,040.20 × 208,090.80
  4. Step 4: Simplify right side
    706,676.40x = 220,584,613,250.16
  5. Step 5: Solve for x
    x = 220,584,613,250.16/706,676.40
  6. Step 6: Final answer
    x = 312,143.74

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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.