Home / 318,898,429.60-478,347,644.40-76,561,333.60

Finding the Fourth Proportional to 318,898,429.60, 478,347,644.40 and 76,561,333.60

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Solution

The fourth proportional to 318,898,429.60, 478,347,644.40 and 76,561,333.60 is: 114,842,000.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,898,429.60 : 478,347,644.40 = 76,561,333.60 : x
  2. Step 2: Convert to fraction form
    318,898,429.60/478,347,644.40 = 76,561,333.60/x
  3. Step 3: Cross multiply
    318,898,429.60x = 478,347,644.40 × 76,561,333.60
  4. Step 4: Simplify right side
    318,898,429.60x = 36,622,933,579,682,568
  5. Step 5: Solve for x
    x = 36,622,933,579,682,568/318,898,429.60
  6. Step 6: Final answer
    x = 114,842,000.40

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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.