Home / 415,172,379.20-622,758,568.80-262,289,998.40

Finding the Fourth Proportional to 415,172,379.20, 622,758,568.80 and 262,289,998.40

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Solution

The fourth proportional to 415,172,379.20, 622,758,568.80 and 262,289,998.40 is: 393,434,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,172,379.20 : 622,758,568.80 = 262,289,998.40 : x
  2. Step 2: Convert to fraction form
    415,172,379.20/622,758,568.80 = 262,289,998.40/x
  3. Step 3: Cross multiply
    415,172,379.20x = 622,758,568.80 × 262,289,998.40
  4. Step 4: Simplify right side
    415,172,379.20x = 163,343,344,014,138,272
  5. Step 5: Solve for x
    x = 163,343,344,014,138,272/415,172,379.20
  6. Step 6: Final answer
    x = 393,434,997.60

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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.