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Finding the Fourth Proportional to 638,996.78, 881,858.34 and 367,152.68

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Solution

The fourth proportional to 638,996.78, 881,858.34 and 367,152.68 is: 506,695.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,996.78 : 881,858.34 = 367,152.68 : x
  2. Step 2: Convert to fraction form
    638,996.78/881,858.34 = 367,152.68/x
  3. Step 3: Cross multiply
    638,996.78x = 881,858.34 × 367,152.68
  4. Step 4: Simplify right side
    638,996.78x = 323,776,648,502.06
  5. Step 5: Solve for x
    x = 323,776,648,502.06/638,996.78
  6. Step 6: Final answer
    x = 506,695.28

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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.