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Finding the Fourth Proportional to 509,807.20, 764,019.60 and 340,847.20

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Solution

The fourth proportional to 509,807.20, 764,019.60 and 340,847.20 is: 510,808.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,807.20 : 764,019.60 = 340,847.20 : x
  2. Step 2: Convert to fraction form
    509,807.20/764,019.60 = 340,847.20/x
  3. Step 3: Cross multiply
    509,807.20x = 764,019.60 × 340,847.20
  4. Step 4: Simplify right side
    509,807.20x = 260,413,941,405.12
  5. Step 5: Solve for x
    x = 260,413,941,405.12/509,807.20
  6. Step 6: Final answer
    x = 510,808.68

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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.