Home / 403,728.20-605,592.30-381,955.40

Finding the Fourth Proportional to 403,728.20, 605,592.30 and 381,955.40

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Solution

The fourth proportional to 403,728.20, 605,592.30 and 381,955.40 is: 572,933.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,728.20 : 605,592.30 = 381,955.40 : x
  2. Step 2: Convert to fraction form
    403,728.20/605,592.30 = 381,955.40/x
  3. Step 3: Cross multiply
    403,728.20x = 605,592.30 × 381,955.40
  4. Step 4: Simplify right side
    403,728.20x = 231,309,249,183.42
  5. Step 5: Solve for x
    x = 231,309,249,183.42/403,728.20
  6. Step 6: Final answer
    x = 572,933.10

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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.