Home / 391,908,991.37-588,226,638.40-197,956,350.72

Finding the Fourth Proportional to 391,908,991.37, 588,226,638.40 and 197,956,350.72

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Solution

The fourth proportional to 391,908,991.37, 588,226,638.40 and 197,956,350.72 is: 297,117,956.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,908,991.37 : 588,226,638.40 = 197,956,350.72 : x
  2. Step 2: Convert to fraction form
    391,908,991.37/588,226,638.40 = 197,956,350.72/x
  3. Step 3: Cross multiply
    391,908,991.37x = 588,226,638.40 × 197,956,350.72
  4. Step 4: Simplify right side
    391,908,991.37x = 116,443,198,733,462,128
  5. Step 5: Solve for x
    x = 116,443,198,733,462,128/391,908,991.37
  6. Step 6: Final answer
    x = 297,117,956.72

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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.