Home / 1,188,663.11-1,640,354.96-672,405.95

Finding the Fourth Proportional to 1,188,663.11, 1,640,354.96 and 672,405.95

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Solution

The fourth proportional to 1,188,663.11, 1,640,354.96 and 672,405.95 is: 927,920.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,663.11 : 1,640,354.96 = 672,405.95 : x
  2. Step 2: Convert to fraction form
    1,188,663.11/1,640,354.96 = 672,405.95/x
  3. Step 3: Cross multiply
    1,188,663.11x = 1,640,354.96 × 672,405.95
  4. Step 4: Simplify right side
    1,188,663.11x = 1,102,984,423,652.21
  5. Step 5: Solve for x
    x = 1,102,984,423,652.21/1,188,663.11
  6. Step 6: Final answer
    x = 927,920.13

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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.