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Finding the Fourth Proportional to 647,748.69, 893,893.10 and 361,262.63

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Solution

The fourth proportional to 647,748.69, 893,893.10 and 361,262.63 is: 498,542.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,748.69 : 893,893.10 = 361,262.63 : x
  2. Step 2: Convert to fraction form
    647,748.69/893,893.10 = 361,262.63/x
  3. Step 3: Cross multiply
    647,748.69x = 893,893.10 × 361,262.63
  4. Step 4: Simplify right side
    647,748.69x = 322,930,165,969.07
  5. Step 5: Solve for x
    x = 322,930,165,969.07/647,748.69
  6. Step 6: Final answer
    x = 498,542.37

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Double scale
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1.5x scale

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.