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Finding the Fourth Proportional to 436,860.95, 655,898.31 and 288,057.47

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Solution

The fourth proportional to 436,860.95, 655,898.31 and 288,057.47 is: 432,486.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,860.95 : 655,898.31 = 288,057.47 : x
  2. Step 2: Convert to fraction form
    436,860.95/655,898.31 = 288,057.47/x
  3. Step 3: Cross multiply
    436,860.95x = 655,898.31 × 288,057.47
  4. Step 4: Simplify right side
    436,860.95x = 188,936,404,476.38
  5. Step 5: Solve for x
    x = 188,936,404,476.38/436,860.95
  6. Step 6: Final answer
    x = 432,486.37

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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.