Home / 400,934,719.20-601,402,078.80-305,383,231.20

Finding the Fourth Proportional to 400,934,719.20, 601,402,078.80 and 305,383,231.20

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Solution

The fourth proportional to 400,934,719.20, 601,402,078.80 and 305,383,231.20 is: 458,074,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,934,719.20 : 601,402,078.80 = 305,383,231.20 : x
  2. Step 2: Convert to fraction form
    400,934,719.20/601,402,078.80 = 305,383,231.20/x
  3. Step 3: Cross multiply
    400,934,719.20x = 601,402,078.80 × 305,383,231.20
  4. Step 4: Simplify right side
    400,934,719.20x = 183,658,110,074,340,992
  5. Step 5: Solve for x
    x = 183,658,110,074,340,992/400,934,719.20
  6. Step 6: Final answer
    x = 458,074,846.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.