Home / 764,455.20-1,146,913.20-409,639.20

Finding the Fourth Proportional to 764,455.20, 1,146,913.20 and 409,639.20

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Solution

The fourth proportional to 764,455.20, 1,146,913.20 and 409,639.20 is: 614,582.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,455.20 : 1,146,913.20 = 409,639.20 : x
  2. Step 2: Convert to fraction form
    764,455.20/1,146,913.20 = 409,639.20/x
  3. Step 3: Cross multiply
    764,455.20x = 1,146,913.20 × 409,639.20
  4. Step 4: Simplify right side
    764,455.20x = 469,820,605,717.44
  5. Step 5: Solve for x
    x = 469,820,605,717.44/764,455.20
  6. Step 6: Final answer
    x = 614,582.26

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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.