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Finding the Fourth Proportional to 624,673.20, 935,697.60 and 343,862.40

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Solution

The fourth proportional to 624,673.20, 935,697.60 and 343,862.40 is: 515,071.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,673.20 : 935,697.60 = 343,862.40 : x
  2. Step 2: Convert to fraction form
    624,673.20/935,697.60 = 343,862.40/x
  3. Step 3: Cross multiply
    624,673.20x = 935,697.60 × 343,862.40
  4. Step 4: Simplify right side
    624,673.20x = 321,751,222,410.24
  5. Step 5: Solve for x
    x = 321,751,222,410.24/624,673.20
  6. Step 6: Final answer
    x = 515,071.28

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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.