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Finding the Fourth Proportional to 622,862.40, 934,293.60 and 423,796.80

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Solution

The fourth proportional to 622,862.40, 934,293.60 and 423,796.80 is: 635,695.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,862.40 : 934,293.60 = 423,796.80 : x
  2. Step 2: Convert to fraction form
    622,862.40/934,293.60 = 423,796.80/x
  3. Step 3: Cross multiply
    622,862.40x = 934,293.60 × 423,796.80
  4. Step 4: Simplify right side
    622,862.40x = 395,950,637,940.48
  5. Step 5: Solve for x
    x = 395,950,637,940.48/622,862.40
  6. Step 6: Final answer
    x = 635,695.20

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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.