Home / 851,754.91-1,276,057.72-430,023.55

Finding the Fourth Proportional to 851,754.91, 1,276,057.72 and 430,023.55

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Solution

The fourth proportional to 851,754.91, 1,276,057.72 and 430,023.55 is: 644,240.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,754.91 : 1,276,057.72 = 430,023.55 : x
  2. Step 2: Convert to fraction form
    851,754.91/1,276,057.72 = 430,023.55/x
  3. Step 3: Cross multiply
    851,754.91x = 1,276,057.72 × 430,023.55
  4. Step 4: Simplify right side
    851,754.91x = 548,734,870,759.31
  5. Step 5: Solve for x
    x = 548,734,870,759.31/851,754.91
  6. Step 6: Final answer
    x = 644,240.34

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1.5x scale

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.