Home / 758,110,979.12-1,136,440,005.60-320,810,103.68

Finding the Fourth Proportional to 758,110,979.12, 1,136,440,005.60 and 320,810,103.68

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Solution

The fourth proportional to 758,110,979.12, 1,136,440,005.60 and 320,810,103.68 is: 480,907,737.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,110,979.12 : 1,136,440,005.60 = 320,810,103.68 : x
  2. Step 2: Convert to fraction form
    758,110,979.12/1,136,440,005.60 = 320,810,103.68/x
  3. Step 3: Cross multiply
    758,110,979.12x = 1,136,440,005.60 × 320,810,103.68
  4. Step 4: Simplify right side
    758,110,979.12x = 364,581,436,022,635,776
  5. Step 5: Solve for x
    x = 364,581,436,022,635,776/758,110,979.12
  6. Step 6: Final answer
    x = 480,907,737.87

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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.