Home / 509,723.57-764,107.85-172,528.26

Finding the Fourth Proportional to 509,723.57, 764,107.85 and 172,528.26

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Solution

The fourth proportional to 509,723.57, 764,107.85 and 172,528.26 is: 258,630.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,723.57 : 764,107.85 = 172,528.26 : x
  2. Step 2: Convert to fraction form
    509,723.57/764,107.85 = 172,528.26/x
  3. Step 3: Cross multiply
    509,723.57x = 764,107.85 × 172,528.26
  4. Step 4: Simplify right side
    509,723.57x = 131,830,197,812.84
  5. Step 5: Solve for x
    x = 131,830,197,812.84/509,723.57
  6. Step 6: Final answer
    x = 258,630.77

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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.