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Finding the Fourth Proportional to 1,310,631.72, 1,966,653.84 and 552,998.30

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Solution

The fourth proportional to 1,310,631.72, 1,966,653.84 and 552,998.30 is: 829,795.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,631.72 : 1,966,653.84 = 552,998.30 : x
  2. Step 2: Convert to fraction form
    1,310,631.72/1,966,653.84 = 552,998.30/x
  3. Step 3: Cross multiply
    1,310,631.72x = 1,966,653.84 × 552,998.30
  4. Step 4: Simplify right side
    1,310,631.72x = 1,087,556,220,375.20
  5. Step 5: Solve for x
    x = 1,087,556,220,375.20/1,310,631.72
  6. Step 6: Final answer
    x = 829,795.44

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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.