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Finding the Fourth Proportional to 447,955.62, 670,354.68 and 279,555.10

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Solution

The fourth proportional to 447,955.62, 670,354.68 and 279,555.10 is: 418,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,955.62 : 670,354.68 = 279,555.10 : x
  2. Step 2: Convert to fraction form
    447,955.62/670,354.68 = 279,555.10/x
  3. Step 3: Cross multiply
    447,955.62x = 670,354.68 × 279,555.10
  4. Step 4: Simplify right side
    447,955.62x = 187,401,068,975.31
  5. Step 5: Solve for x
    x = 187,401,068,975.31/447,955.62
  6. Step 6: Final answer
    x = 418,347.40

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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.