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Finding the Fourth Proportional to 605,470.40, 908,205.60 and 418,846.40

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Solution

The fourth proportional to 605,470.40, 908,205.60 and 418,846.40 is: 628,269.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,470.40 : 908,205.60 = 418,846.40 : x
  2. Step 2: Convert to fraction form
    605,470.40/908,205.60 = 418,846.40/x
  3. Step 3: Cross multiply
    605,470.40x = 908,205.60 × 418,846.40
  4. Step 4: Simplify right side
    605,470.40x = 380,398,646,019.84
  5. Step 5: Solve for x
    x = 380,398,646,019.84/605,470.40
  6. Step 6: Final answer
    x = 628,269.60

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Similar ratio
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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.