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Finding the Fourth Proportional to 605,614.80, 907,984.80 and 339,456.90

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Solution

The fourth proportional to 605,614.80, 907,984.80 and 339,456.90 is: 508,940.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,614.80 : 907,984.80 = 339,456.90 : x
  2. Step 2: Convert to fraction form
    605,614.80/907,984.80 = 339,456.90/x
  3. Step 3: Cross multiply
    605,614.80x = 907,984.80 × 339,456.90
  4. Step 4: Simplify right side
    605,614.80x = 308,221,705,455.12
  5. Step 5: Solve for x
    x = 308,221,705,455.12/605,614.80
  6. Step 6: Final answer
    x = 508,940.18

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1.5x scale

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.