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Finding the Fourth Proportional to 605,412.80, 908,313.60 and 268,323.20

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Solution

The fourth proportional to 605,412.80, 908,313.60 and 268,323.20 is: 402,570.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,412.80 : 908,313.60 = 268,323.20 : x
  2. Step 2: Convert to fraction form
    605,412.80/908,313.60 = 268,323.20/x
  3. Step 3: Cross multiply
    605,412.80x = 908,313.60 × 268,323.20
  4. Step 4: Simplify right side
    605,412.80x = 243,721,611,755.52
  5. Step 5: Solve for x
    x = 243,721,611,755.52/605,412.80
  6. Step 6: Final answer
    x = 402,570.96

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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.