Home / 486,306.20-727,709.70-328,842.20

Finding the Fourth Proportional to 486,306.20, 727,709.70 and 328,842.20

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Solution

The fourth proportional to 486,306.20, 727,709.70 and 328,842.20 is: 492,080.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,306.20 : 727,709.70 = 328,842.20 : x
  2. Step 2: Convert to fraction form
    486,306.20/727,709.70 = 328,842.20/x
  3. Step 3: Cross multiply
    486,306.20x = 727,709.70 × 328,842.20
  4. Step 4: Simplify right side
    486,306.20x = 239,301,658,709.34
  5. Step 5: Solve for x
    x = 239,301,658,709.34/486,306.20
  6. Step 6: Final answer
    x = 492,080.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.