Home / 768,418.70-1,059,431.86-630,087.92

Finding the Fourth Proportional to 768,418.70, 1,059,431.86 and 630,087.92

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Solution

The fourth proportional to 768,418.70, 1,059,431.86 and 630,087.92 is: 868,712.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,418.70 : 1,059,431.86 = 630,087.92 : x
  2. Step 2: Convert to fraction form
    768,418.70/1,059,431.86 = 630,087.92/x
  3. Step 3: Cross multiply
    768,418.70x = 1,059,431.86 × 630,087.92
  4. Step 4: Simplify right side
    768,418.70x = 667,535,212,539.58
  5. Step 5: Solve for x
    x = 667,535,212,539.58/768,418.70
  6. Step 6: Final answer
    x = 868,712.86

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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.