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Finding the Fourth Proportional to 605,025.20, 908,412.60 and 456,309.20

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Solution

The fourth proportional to 605,025.20, 908,412.60 and 456,309.20 is: 685,123.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,025.20 : 908,412.60 = 456,309.20 : x
  2. Step 2: Convert to fraction form
    605,025.20/908,412.60 = 456,309.20/x
  3. Step 3: Cross multiply
    605,025.20x = 908,412.60 × 456,309.20
  4. Step 4: Simplify right side
    605,025.20x = 414,517,026,775.92
  5. Step 5: Solve for x
    x = 414,517,026,775.92/605,025.20
  6. Step 6: Final answer
    x = 685,123.57

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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.