Home / 1,138,900-1,571,545.56-629,533.12

Finding the Fourth Proportional to 1,138,900, 1,571,545.56 and 629,533.12

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Solution

The fourth proportional to 1,138,900, 1,571,545.56 and 629,533.12 is: 868,680.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,900 : 1,571,545.56 = 629,533.12 : x
  2. Step 2: Convert to fraction form
    1,138,900/1,571,545.56 = 629,533.12/x
  3. Step 3: Cross multiply
    1,138,900x = 1,571,545.56 × 629,533.12
  4. Step 4: Simplify right side
    1,138,900x = 989,339,979,608.95
  5. Step 5: Solve for x
    x = 989,339,979,608.95/1,138,900
  6. Step 6: Final answer
    x = 868,680.29

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1.5x scale

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.