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Finding the Fourth Proportional to 408,528.90, 613,449.45 and 308,801.70

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Solution

The fourth proportional to 408,528.90, 613,449.45 and 308,801.70 is: 463,698.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,528.90 : 613,449.45 = 308,801.70 : x
  2. Step 2: Convert to fraction form
    408,528.90/613,449.45 = 308,801.70/x
  3. Step 3: Cross multiply
    408,528.90x = 613,449.45 × 308,801.70
  4. Step 4: Simplify right side
    408,528.90x = 189,434,233,024.07
  5. Step 5: Solve for x
    x = 189,434,233,024.07/408,528.90
  6. Step 6: Final answer
    x = 463,698.49

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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.