Home / 1,125,401.90-1,553,202.46-641,856.20

Finding the Fourth Proportional to 1,125,401.90, 1,553,202.46 and 641,856.20

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Solution

The fourth proportional to 1,125,401.90, 1,553,202.46 and 641,856.20 is: 885,845.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,401.90 : 1,553,202.46 = 641,856.20 : x
  2. Step 2: Convert to fraction form
    1,125,401.90/1,553,202.46 = 641,856.20/x
  3. Step 3: Cross multiply
    1,125,401.90x = 1,553,202.46 × 641,856.20
  4. Step 4: Simplify right side
    1,125,401.90x = 996,932,632,384.54
  5. Step 5: Solve for x
    x = 996,932,632,384.54/1,125,401.90
  6. Step 6: Final answer
    x = 885,845.88

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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.