Home / 509,824.38-764,838.66-285,503.82

Finding the Fourth Proportional to 509,824.38, 764,838.66 and 285,503.82

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Solution

The fourth proportional to 509,824.38, 764,838.66 and 285,503.82 is: 428,312.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,824.38 : 764,838.66 = 285,503.82 : x
  2. Step 2: Convert to fraction form
    509,824.38/764,838.66 = 285,503.82/x
  3. Step 3: Cross multiply
    509,824.38x = 764,838.66 × 285,503.82
  4. Step 4: Simplify right side
    509,824.38x = 218,364,359,113.68
  5. Step 5: Solve for x
    x = 218,364,359,113.68/509,824.38
  6. Step 6: Final answer
    x = 428,312.90

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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.