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Finding the Fourth Proportional to 515,711,321.64, 773,835,721.02 and 228,429,801

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Solution

The fourth proportional to 515,711,321.64, 773,835,721.02 and 228,429,801 is: 342,763,736.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,711,321.64 : 773,835,721.02 = 228,429,801 : x
  2. Step 2: Convert to fraction form
    515,711,321.64/773,835,721.02 = 228,429,801/x
  3. Step 3: Cross multiply
    515,711,321.64x = 773,835,721.02 × 228,429,801
  4. Step 4: Simplify right side
    515,711,321.64x = 176,767,139,759,290,112
  5. Step 5: Solve for x
    x = 176,767,139,759,290,112/515,711,321.64
  6. Step 6: Final answer
    x = 342,763,736.89

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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.