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Finding the Fourth Proportional to 869,523.20, 1,304,515.20 and 308,499.20

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Solution

The fourth proportional to 869,523.20, 1,304,515.20 and 308,499.20 is: 462,830.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,523.20 : 1,304,515.20 = 308,499.20 : x
  2. Step 2: Convert to fraction form
    869,523.20/1,304,515.20 = 308,499.20/x
  3. Step 3: Cross multiply
    869,523.20x = 1,304,515.20 × 308,499.20
  4. Step 4: Simplify right side
    869,523.20x = 402,441,895,587.84
  5. Step 5: Solve for x
    x = 402,441,895,587.84/869,523.20
  6. Step 6: Final answer
    x = 462,830.54

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1.5x scale

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.