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Finding the Fourth Proportional to 605,221.60, 907,832.40 and 310,309.60

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Solution

The fourth proportional to 605,221.60, 907,832.40 and 310,309.60 is: 465,464.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,221.60 : 907,832.40 = 310,309.60 : x
  2. Step 2: Convert to fraction form
    605,221.60/907,832.40 = 310,309.60/x
  3. Step 3: Cross multiply
    605,221.60x = 907,832.40 × 310,309.60
  4. Step 4: Simplify right side
    605,221.60x = 281,709,108,911.04
  5. Step 5: Solve for x
    x = 281,709,108,911.04/605,221.60
  6. Step 6: Final answer
    x = 465,464.40

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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.