Home / 509,099.20-702,515.04-279,644.68

Finding the Fourth Proportional to 509,099.20, 702,515.04 and 279,644.68

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Solution

The fourth proportional to 509,099.20, 702,515.04 and 279,644.68 is: 385,886.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,099.20 : 702,515.04 = 279,644.68 : x
  2. Step 2: Convert to fraction form
    509,099.20/702,515.04 = 279,644.68/x
  3. Step 3: Cross multiply
    509,099.20x = 702,515.04 × 279,644.68
  4. Step 4: Simplify right side
    509,099.20x = 196,454,593,555.99
  5. Step 5: Solve for x
    x = 196,454,593,555.99/509,099.20
  6. Step 6: Final answer
    x = 385,886.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.