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Finding the Fourth Proportional to 605,738.40, 907,623.45 and 505,355.10

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Solution

The fourth proportional to 605,738.40, 907,623.45 and 505,355.10 is: 757,211.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,738.40 : 907,623.45 = 505,355.10 : x
  2. Step 2: Convert to fraction form
    605,738.40/907,623.45 = 505,355.10/x
  3. Step 3: Cross multiply
    605,738.40x = 907,623.45 × 505,355.10
  4. Step 4: Simplify right side
    605,738.40x = 458,672,139,337.10
  5. Step 5: Solve for x
    x = 458,672,139,337.10/605,738.40
  6. Step 6: Final answer
    x = 757,211.59

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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.