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Finding the Fourth Proportional to 860,714.69, 1,290,841.38 and 261,514.96

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Solution

The fourth proportional to 860,714.69, 1,290,841.38 and 261,514.96 is: 392,202.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,714.69 : 1,290,841.38 = 261,514.96 : x
  2. Step 2: Convert to fraction form
    860,714.69/1,290,841.38 = 261,514.96/x
  3. Step 3: Cross multiply
    860,714.69x = 1,290,841.38 × 261,514.96
  4. Step 4: Simplify right side
    860,714.69x = 337,574,336,043.91
  5. Step 5: Solve for x
    x = 337,574,336,043.91/860,714.69
  6. Step 6: Final answer
    x = 392,202.36

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1.5x scale

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.