Home / 428,300.20-591,342.96-382,832.47

Finding the Fourth Proportional to 428,300.20, 591,342.96 and 382,832.47

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Solution

The fourth proportional to 428,300.20, 591,342.96 and 382,832.47 is: 528,566.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,300.20 : 591,342.96 = 382,832.47 : x
  2. Step 2: Convert to fraction form
    428,300.20/591,342.96 = 382,832.47/x
  3. Step 3: Cross multiply
    428,300.20x = 591,342.96 × 382,832.47
  4. Step 4: Simplify right side
    428,300.20x = 226,385,285,993.91
  5. Step 5: Solve for x
    x = 226,385,285,993.91/428,300.20
  6. Step 6: Final answer
    x = 528,566.85

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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.