Home / 809,723,356.58-1,215,148,865.50-285,134,712.70

Finding the Fourth Proportional to 809,723,356.58, 1,215,148,865.50 and 285,134,712.70

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Solution

The fourth proportional to 809,723,356.58, 1,215,148,865.50 and 285,134,712.70 is: 427,900,615.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,723,356.58 : 1,215,148,865.50 = 285,134,712.70 : x
  2. Step 2: Convert to fraction form
    809,723,356.58/1,215,148,865.50 = 285,134,712.70/x
  3. Step 3: Cross multiply
    809,723,356.58x = 1,215,148,865.50 × 285,134,712.70
  4. Step 4: Simplify right side
    809,723,356.58x = 346,481,122,649,406,272
  5. Step 5: Solve for x
    x = 346,481,122,649,406,272/809,723,356.58
  6. Step 6: Final answer
    x = 427,900,615.48

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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.