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Finding the Fourth Proportional to 607,338.30, 909,239.50 and 318,464.94

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Solution

The fourth proportional to 607,338.30, 909,239.50 and 318,464.94 is: 476,770.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,338.30 : 909,239.50 = 318,464.94 : x
  2. Step 2: Convert to fraction form
    607,338.30/909,239.50 = 318,464.94/x
  3. Step 3: Cross multiply
    607,338.30x = 909,239.50 × 318,464.94
  4. Step 4: Simplify right side
    607,338.30x = 289,560,902,813.13
  5. Step 5: Solve for x
    x = 289,560,902,813.13/607,338.30
  6. Step 6: Final answer
    x = 476,770.36

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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.