Home / 743,155.37-1,025,520.08-420,867.80

Finding the Fourth Proportional to 743,155.37, 1,025,520.08 and 420,867.80

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Solution

The fourth proportional to 743,155.37, 1,025,520.08 and 420,867.80 is: 580,778.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,155.37 : 1,025,520.08 = 420,867.80 : x
  2. Step 2: Convert to fraction form
    743,155.37/1,025,520.08 = 420,867.80/x
  3. Step 3: Cross multiply
    743,155.37x = 1,025,520.08 × 420,867.80
  4. Step 4: Simplify right side
    743,155.37x = 431,608,372,693.49
  5. Step 5: Solve for x
    x = 431,608,372,693.49/743,155.37
  6. Step 6: Final answer
    x = 580,778.11

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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.