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Finding the Fourth Proportional to 612,676.85, 845,517.36 and 340,764.39

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Solution

The fourth proportional to 612,676.85, 845,517.36 and 340,764.39 is: 470,267.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,676.85 : 845,517.36 = 340,764.39 : x
  2. Step 2: Convert to fraction form
    612,676.85/845,517.36 = 340,764.39/x
  3. Step 3: Cross multiply
    612,676.85x = 845,517.36 × 340,764.39
  4. Step 4: Simplify right side
    612,676.85x = 288,122,207,414.81
  5. Step 5: Solve for x
    x = 288,122,207,414.81/612,676.85
  6. Step 6: Final answer
    x = 470,267.83

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1.5x scale

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.