Home / 400,470,688.71-552,622,757.85-221,842,481.40

Finding the Fourth Proportional to 400,470,688.71, 552,622,757.85 and 221,842,481.40

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Solution

The fourth proportional to 400,470,688.71, 552,622,757.85 and 221,842,481.40 is: 306,127,782.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,470,688.71 : 552,622,757.85 = 221,842,481.40 : x
  2. Step 2: Convert to fraction form
    400,470,688.71/552,622,757.85 = 221,842,481.40/x
  3. Step 3: Cross multiply
    400,470,688.71x = 552,622,757.85 × 221,842,481.40
  4. Step 4: Simplify right side
    400,470,688.71x = 122,595,203,879,555,344
  5. Step 5: Solve for x
    x = 122,595,203,879,555,344/400,470,688.71
  6. Step 6: Final answer
    x = 306,127,782.47

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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.