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Finding the Fourth Proportional to 605,046.40, 907,569.60 and 339,625.60

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Solution

The fourth proportional to 605,046.40, 907,569.60 and 339,625.60 is: 509,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,046.40 : 907,569.60 = 339,625.60 : x
  2. Step 2: Convert to fraction form
    605,046.40/907,569.60 = 339,625.60/x
  3. Step 3: Cross multiply
    605,046.40x = 907,569.60 × 339,625.60
  4. Step 4: Simplify right side
    605,046.40x = 308,233,869,941.76
  5. Step 5: Solve for x
    x = 308,233,869,941.76/605,046.40
  6. Step 6: Final answer
    x = 509,438.40

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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.