Home / 1,172,638.80-1,618,247.52-663,330.24

Finding the Fourth Proportional to 1,172,638.80, 1,618,247.52 and 663,330.24

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Solution

The fourth proportional to 1,172,638.80, 1,618,247.52 and 663,330.24 is: 915,399.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172,638.80 : 1,618,247.52 = 663,330.24 : x
  2. Step 2: Convert to fraction form
    1,172,638.80/1,618,247.52 = 663,330.24/x
  3. Step 3: Cross multiply
    1,172,638.80x = 1,618,247.52 × 663,330.24
  4. Step 4: Simplify right side
    1,172,638.80x = 1,073,432,515,821.00
  5. Step 5: Solve for x
    x = 1,073,432,515,821.00/1,172,638.80
  6. Step 6: Final answer
    x = 915,399.11

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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.