Home / 556,616,644.76-768,140,221.20-305,744,233.88

Finding the Fourth Proportional to 556,616,644.76, 768,140,221.20 and 305,744,233.88

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Solution

The fourth proportional to 556,616,644.76, 768,140,221.20 and 305,744,233.88 is: 421,932,124.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,616,644.76 : 768,140,221.20 = 305,744,233.88 : x
  2. Step 2: Convert to fraction form
    556,616,644.76/768,140,221.20 = 305,744,233.88/x
  3. Step 3: Cross multiply
    556,616,644.76x = 768,140,221.20 × 305,744,233.88
  4. Step 4: Simplify right side
    556,616,644.76x = 234,854,443,443,207,744
  5. Step 5: Solve for x
    x = 234,854,443,443,207,744/556,616,644.76
  6. Step 6: Final answer
    x = 421,932,124.48

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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.