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Finding the Fourth Proportional to 540,448.89, 745,716.83 and 339,154.17

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Solution

The fourth proportional to 540,448.89, 745,716.83 and 339,154.17 is: 467,968.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,448.89 : 745,716.83 = 339,154.17 : x
  2. Step 2: Convert to fraction form
    540,448.89/745,716.83 = 339,154.17/x
  3. Step 3: Cross multiply
    540,448.89x = 745,716.83 × 339,154.17
  4. Step 4: Simplify right side
    540,448.89x = 252,912,970,837.91
  5. Step 5: Solve for x
    x = 252,912,970,837.91/540,448.89
  6. Step 6: Final answer
    x = 467,968.34

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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.