Home / 428,290.20-591,329.16-382,822.47

Finding the Fourth Proportional to 428,290.20, 591,329.16 and 382,822.47

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Solution

The fourth proportional to 428,290.20, 591,329.16 and 382,822.47 is: 528,553.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,290.20 : 591,329.16 = 382,822.47 : x
  2. Step 2: Convert to fraction form
    428,290.20/591,329.16 = 382,822.47/x
  3. Step 3: Cross multiply
    428,290.20x = 591,329.16 × 382,822.47
  4. Step 4: Simplify right side
    428,290.20x = 226,374,089,614.23
  5. Step 5: Solve for x
    x = 226,374,089,614.23/428,290.20
  6. Step 6: Final answer
    x = 528,553.05

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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.