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Finding the Fourth Proportional to 605,424.40, 907,488.60 and 205,694.80

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Solution

The fourth proportional to 605,424.40, 907,488.60 and 205,694.80 is: 308,322.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,424.40 : 907,488.60 = 205,694.80 : x
  2. Step 2: Convert to fraction form
    605,424.40/907,488.60 = 205,694.80/x
  3. Step 3: Cross multiply
    605,424.40x = 907,488.60 × 205,694.80
  4. Step 4: Simplify right side
    605,424.40x = 186,665,686,079.28
  5. Step 5: Solve for x
    x = 186,665,686,079.28/605,424.40
  6. Step 6: Final answer
    x = 308,322.04

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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.