Home / 851,751.91-1,276,053.22-430,020.55

Finding the Fourth Proportional to 851,751.91, 1,276,053.22 and 430,020.55

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Solution

The fourth proportional to 851,751.91, 1,276,053.22 and 430,020.55 is: 644,235.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,751.91 : 1,276,053.22 = 430,020.55 : x
  2. Step 2: Convert to fraction form
    851,751.91/1,276,053.22 = 430,020.55/x
  3. Step 3: Cross multiply
    851,751.91x = 1,276,053.22 × 430,020.55
  4. Step 4: Simplify right side
    851,751.91x = 548,729,107,493.67
  5. Step 5: Solve for x
    x = 548,729,107,493.67/851,751.91
  6. Step 6: Final answer
    x = 644,235.84

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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.