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Finding the Fourth Proportional to 605,574.63, 907,328.25 and 427,738.59

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Solution

The fourth proportional to 605,574.63, 907,328.25 and 427,738.59 is: 640,877.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,574.63 : 907,328.25 = 427,738.59 : x
  2. Step 2: Convert to fraction form
    605,574.63/907,328.25 = 427,738.59/x
  3. Step 3: Cross multiply
    605,574.63x = 907,328.25 × 427,738.59
  4. Step 4: Simplify right side
    605,574.63x = 388,099,306,322.17
  5. Step 5: Solve for x
    x = 388,099,306,322.17/605,574.63
  6. Step 6: Final answer
    x = 640,877.75

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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.