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Finding the Fourth Proportional to 613,696.80, 921,495.60 and 333,760.80

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Solution

The fourth proportional to 613,696.80, 921,495.60 and 333,760.80 is: 501,158.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,696.80 : 921,495.60 = 333,760.80 : x
  2. Step 2: Convert to fraction form
    613,696.80/921,495.60 = 333,760.80/x
  3. Step 3: Cross multiply
    613,696.80x = 921,495.60 × 333,760.80
  4. Step 4: Simplify right side
    613,696.80x = 307,559,108,652.48
  5. Step 5: Solve for x
    x = 307,559,108,652.48/613,696.80
  6. Step 6: Final answer
    x = 501,158.08

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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.