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Finding the Fourth Proportional to 486,074.80, 729,112.20 and 308,004.40

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Solution

The fourth proportional to 486,074.80, 729,112.20 and 308,004.40 is: 462,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,074.80 : 729,112.20 = 308,004.40 : x
  2. Step 2: Convert to fraction form
    486,074.80/729,112.20 = 308,004.40/x
  3. Step 3: Cross multiply
    486,074.80x = 729,112.20 × 308,004.40
  4. Step 4: Simplify right side
    486,074.80x = 224,569,765,693.68
  5. Step 5: Solve for x
    x = 224,569,765,693.68/486,074.80
  6. Step 6: Final answer
    x = 462,006.60

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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.