Home / 579,881,905.20-800,237,161.16-319,121,521.20

Finding the Fourth Proportional to 579,881,905.20, 800,237,161.16 and 319,121,521.20

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Solution

The fourth proportional to 579,881,905.20, 800,237,161.16 and 319,121,521.20 is: 440,387,771.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,881,905.20 : 800,237,161.16 = 319,121,521.20 : x
  2. Step 2: Convert to fraction form
    579,881,905.20/800,237,161.16 = 319,121,521.20/x
  3. Step 3: Cross multiply
    579,881,905.20x = 800,237,161.16 × 319,121,521.20
  4. Step 4: Simplify right side
    579,881,905.20x = 255,372,900,190,148,736
  5. Step 5: Solve for x
    x = 255,372,900,190,148,736/579,881,905.20
  6. Step 6: Final answer
    x = 440,387,771.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.