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Finding the Fourth Proportional to 624,666.48, 862,064.28 and 352,791.60

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Solution

The fourth proportional to 624,666.48, 862,064.28 and 352,791.60 is: 486,866.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,666.48 : 862,064.28 = 352,791.60 : x
  2. Step 2: Convert to fraction form
    624,666.48/862,064.28 = 352,791.60/x
  3. Step 3: Cross multiply
    624,666.48x = 862,064.28 × 352,791.60
  4. Step 4: Simplify right side
    624,666.48x = 304,129,036,644.05
  5. Step 5: Solve for x
    x = 304,129,036,644.05/624,666.48
  6. Step 6: Final answer
    x = 486,866.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.