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Finding the Fourth Proportional to 605,223.70, 907,835.55 and 392,647.30

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Solution

The fourth proportional to 605,223.70, 907,835.55 and 392,647.30 is: 588,970.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,223.70 : 907,835.55 = 392,647.30 : x
  2. Step 2: Convert to fraction form
    605,223.70/907,835.55 = 392,647.30/x
  3. Step 3: Cross multiply
    605,223.70x = 907,835.55 × 392,647.30
  4. Step 4: Simplify right side
    605,223.70x = 356,459,177,551.52
  5. Step 5: Solve for x
    x = 356,459,177,551.52/605,223.70
  6. Step 6: Final answer
    x = 588,970.95

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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.