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Finding the Fourth Proportional to 605,061.60, 907,592.40 and 394,936.80

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Solution

The fourth proportional to 605,061.60, 907,592.40 and 394,936.80 is: 592,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,061.60 : 907,592.40 = 394,936.80 : x
  2. Step 2: Convert to fraction form
    605,061.60/907,592.40 = 394,936.80/x
  3. Step 3: Cross multiply
    605,061.60x = 907,592.40 × 394,936.80
  4. Step 4: Simplify right side
    605,061.60x = 358,441,638,160.32
  5. Step 5: Solve for x
    x = 358,441,638,160.32/605,061.60
  6. Step 6: Final answer
    x = 592,405.20

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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.