Home / 847,067,138.60-1,168,981,004.15-470,739,587.78

Finding the Fourth Proportional to 847,067,138.60, 1,168,981,004.15 and 470,739,587.78

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Solution

The fourth proportional to 847,067,138.60, 1,168,981,004.15 and 470,739,587.78 is: 649,636,387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,067,138.60 : 1,168,981,004.15 = 470,739,587.78 : x
  2. Step 2: Convert to fraction form
    847,067,138.60/1,168,981,004.15 = 470,739,587.78/x
  3. Step 3: Cross multiply
    847,067,138.60x = 1,168,981,004.15 × 470,739,587.78
  4. Step 4: Simplify right side
    847,067,138.60x = 550,285,636,008,022,848
  5. Step 5: Solve for x
    x = 550,285,636,008,022,848/847,067,138.60
  6. Step 6: Final answer
    x = 649,636,387.64

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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.