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Finding the Fourth Proportional to 408,001.20, 611,404.20 and 365,881.20

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Solution

The fourth proportional to 408,001.20, 611,404.20 and 365,881.20 is: 548,285.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,001.20 : 611,404.20 = 365,881.20 : x
  2. Step 2: Convert to fraction form
    408,001.20/611,404.20 = 365,881.20/x
  3. Step 3: Cross multiply
    408,001.20x = 611,404.20 × 365,881.20
  4. Step 4: Simplify right side
    408,001.20x = 223,701,302,381.04
  5. Step 5: Solve for x
    x = 223,701,302,381.04/408,001.20
  6. Step 6: Final answer
    x = 548,285.89

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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.