Home / 509,256.29-702,834.78-305,419.35

Finding the Fourth Proportional to 509,256.29, 702,834.78 and 305,419.35

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Solution

The fourth proportional to 509,256.29, 702,834.78 and 305,419.35 is: 421,515.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,256.29 : 702,834.78 = 305,419.35 : x
  2. Step 2: Convert to fraction form
    509,256.29/702,834.78 = 305,419.35/x
  3. Step 3: Cross multiply
    509,256.29x = 702,834.78 × 305,419.35
  4. Step 4: Simplify right side
    509,256.29x = 214,659,341,664.99
  5. Step 5: Solve for x
    x = 214,659,341,664.99/509,256.29
  6. Step 6: Final answer
    x = 421,515.35

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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.