Home / 509,822.40-764,835.68-285,501.84

Finding the Fourth Proportional to 509,822.40, 764,835.68 and 285,501.84

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Solution

The fourth proportional to 509,822.40, 764,835.68 and 285,501.84 is: 428,309.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,822.40 : 764,835.68 = 285,501.84 : x
  2. Step 2: Convert to fraction form
    509,822.40/764,835.68 = 285,501.84/x
  3. Step 3: Cross multiply
    509,822.40x = 764,835.68 × 285,501.84
  4. Step 4: Simplify right side
    509,822.40x = 218,361,993,937.65
  5. Step 5: Solve for x
    x = 218,361,993,937.65/509,822.40
  6. Step 6: Final answer
    x = 428,309.93

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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.