Home / 990,840-1,367,613.60-603,917.76

Finding the Fourth Proportional to 990,840, 1,367,613.60 and 603,917.76

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Solution

The fourth proportional to 990,840, 1,367,613.60 and 603,917.76 is: 833,561.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,840 : 1,367,613.60 = 603,917.76 : x
  2. Step 2: Convert to fraction form
    990,840/1,367,613.60 = 603,917.76/x
  3. Step 3: Cross multiply
    990,840x = 1,367,613.60 × 603,917.76
  4. Step 4: Simplify right side
    990,840x = 825,926,141,857.54
  5. Step 5: Solve for x
    x = 825,926,141,857.54/990,840
  6. Step 6: Final answer
    x = 833,561.57

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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.