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Finding the Fourth Proportional to 604,969.20, 907,453.80 and 392,392.80

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Solution

The fourth proportional to 604,969.20, 907,453.80 and 392,392.80 is: 588,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,969.20 : 907,453.80 = 392,392.80 : x
  2. Step 2: Convert to fraction form
    604,969.20/907,453.80 = 392,392.80/x
  3. Step 3: Cross multiply
    604,969.20x = 907,453.80 × 392,392.80
  4. Step 4: Simplify right side
    604,969.20x = 356,078,337,452.64
  5. Step 5: Solve for x
    x = 356,078,337,452.64/604,969.20
  6. Step 6: Final answer
    x = 588,589.20

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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.