Home / 743,172.37-1,025,543.50-420,884.79

Finding the Fourth Proportional to 743,172.37, 1,025,543.50 and 420,884.79

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Solution

The fourth proportional to 743,172.37, 1,025,543.50 and 420,884.79 is: 580,801.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,172.37 : 1,025,543.50 = 420,884.79 : x
  2. Step 2: Convert to fraction form
    743,172.37/1,025,543.50 = 420,884.79/x
  3. Step 3: Cross multiply
    743,172.37x = 1,025,543.50 × 420,884.79
  4. Step 4: Simplify right side
    743,172.37x = 431,635,660,633.37
  5. Step 5: Solve for x
    x = 431,635,660,633.37/743,172.37
  6. Step 6: Final answer
    x = 580,801.54

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1.5x scale

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.