Home / 509,256.73-702,835.38-305,419.79

Finding the Fourth Proportional to 509,256.73, 702,835.38 and 305,419.79

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Solution

The fourth proportional to 509,256.73, 702,835.38 and 305,419.79 is: 421,515.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,256.73 : 702,835.38 = 305,419.79 : x
  2. Step 2: Convert to fraction form
    509,256.73/702,835.38 = 305,419.79/x
  3. Step 3: Cross multiply
    509,256.73x = 702,835.38 × 305,419.79
  4. Step 4: Simplify right side
    509,256.73x = 214,659,834,164.17
  5. Step 5: Solve for x
    x = 214,659,834,164.17/509,256.73
  6. Step 6: Final answer
    x = 421,515.95

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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.