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Finding the Fourth Proportional to 988,120.12, 1,363,610.52 and 535,411

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Solution

The fourth proportional to 988,120.12, 1,363,610.52 and 535,411 is: 738,869.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,120.12 : 1,363,610.52 = 535,411 : x
  2. Step 2: Convert to fraction form
    988,120.12/1,363,610.52 = 535,411/x
  3. Step 3: Cross multiply
    988,120.12x = 1,363,610.52 × 535,411
  4. Step 4: Simplify right side
    988,120.12x = 730,092,072,123.72
  5. Step 5: Solve for x
    x = 730,092,072,123.72/988,120.12
  6. Step 6: Final answer
    x = 738,869.76

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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.