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Finding the Fourth Proportional to 605,085.30, 907,627.95 and 393,578.10

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Solution

The fourth proportional to 605,085.30, 907,627.95 and 393,578.10 is: 590,367.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,085.30 : 907,627.95 = 393,578.10 : x
  2. Step 2: Convert to fraction form
    605,085.30/907,627.95 = 393,578.10/x
  3. Step 3: Cross multiply
    605,085.30x = 907,627.95 × 393,578.10
  4. Step 4: Simplify right side
    605,085.30x = 357,222,484,067.90
  5. Step 5: Solve for x
    x = 357,222,484,067.90/605,085.30
  6. Step 6: Final answer
    x = 590,367.15

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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.