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Finding the Fourth Proportional to 605,187.20, 908,655.60 and 456,471.20

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Solution

The fourth proportional to 605,187.20, 908,655.60 and 456,471.20 is: 685,366.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,187.20 : 908,655.60 = 456,471.20 : x
  2. Step 2: Convert to fraction form
    605,187.20/908,655.60 = 456,471.20/x
  3. Step 3: Cross multiply
    605,187.20x = 908,655.60 × 456,471.20
  4. Step 4: Simplify right side
    605,187.20x = 414,775,112,118.72
  5. Step 5: Solve for x
    x = 414,775,112,118.72/605,187.20
  6. Step 6: Final answer
    x = 685,366.63

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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.