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Finding the Fourth Proportional to 436,848.90, 655,273.35 and 347,619.30

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Solution

The fourth proportional to 436,848.90, 655,273.35 and 347,619.30 is: 521,428.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,848.90 : 655,273.35 = 347,619.30 : x
  2. Step 2: Convert to fraction form
    436,848.90/655,273.35 = 347,619.30/x
  3. Step 3: Cross multiply
    436,848.90x = 655,273.35 × 347,619.30
  4. Step 4: Simplify right side
    436,848.90x = 227,785,663,235.66
  5. Step 5: Solve for x
    x = 227,785,663,235.66/436,848.90
  6. Step 6: Final answer
    x = 521,428.95

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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.