Home / 428,263.20-591,291.90-382,795.47

Finding the Fourth Proportional to 428,263.20, 591,291.90 and 382,795.47

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Solution

The fourth proportional to 428,263.20, 591,291.90 and 382,795.47 is: 528,515.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,263.20 : 591,291.90 = 382,795.47 : x
  2. Step 2: Convert to fraction form
    428,263.20/591,291.90 = 382,795.47/x
  3. Step 3: Cross multiply
    428,263.20x = 591,291.90 × 382,795.47
  4. Step 4: Simplify right side
    428,263.20x = 226,343,860,767.69
  5. Step 5: Solve for x
    x = 226,343,860,767.69/428,263.20
  6. Step 6: Final answer
    x = 528,515.78

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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.