Home / 430,821.52-646,364.12-220,608.24

Finding the Fourth Proportional to 430,821.52, 646,364.12 and 220,608.24

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Solution

The fourth proportional to 430,821.52, 646,364.12 and 220,608.24 is: 330,979.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,821.52 : 646,364.12 = 220,608.24 : x
  2. Step 2: Convert to fraction form
    430,821.52/646,364.12 = 220,608.24/x
  3. Step 3: Cross multiply
    430,821.52x = 646,364.12 × 220,608.24
  4. Step 4: Simplify right side
    430,821.52x = 142,593,250,912.35
  5. Step 5: Solve for x
    x = 142,593,250,912.35/430,821.52
  6. Step 6: Final answer
    x = 330,979.87

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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.