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Finding the Fourth Proportional to 509,570.33, 764,352.75 and 130,490.33

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Solution

The fourth proportional to 509,570.33, 764,352.75 and 130,490.33 is: 195,734.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,570.33 : 764,352.75 = 130,490.33 : x
  2. Step 2: Convert to fraction form
    509,570.33/764,352.75 = 130,490.33/x
  3. Step 3: Cross multiply
    509,570.33x = 764,352.75 × 130,490.33
  4. Step 4: Simplify right side
    509,570.33x = 99,740,639,251.48
  5. Step 5: Solve for x
    x = 99,740,639,251.48/509,570.33
  6. Step 6: Final answer
    x = 195,734.79

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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.