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Finding the Fourth Proportional to 562,600,672.80, 843,901,009.20 and 378,934,663.20

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Solution

The fourth proportional to 562,600,672.80, 843,901,009.20 and 378,934,663.20 is: 568,401,994.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,600,672.80 : 843,901,009.20 = 378,934,663.20 : x
  2. Step 2: Convert to fraction form
    562,600,672.80/843,901,009.20 = 378,934,663.20/x
  3. Step 3: Cross multiply
    562,600,672.80x = 843,901,009.20 × 378,934,663.20
  4. Step 4: Simplify right side
    562,600,672.80x = 319,783,344,695,342,080
  5. Step 5: Solve for x
    x = 319,783,344,695,342,080/562,600,672.80
  6. Step 6: Final answer
    x = 568,401,994.80

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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.