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Finding the Fourth Proportional to 619,489,318.70, 929,233,978.05 and 434,059,712.30

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Solution

The fourth proportional to 619,489,318.70, 929,233,978.05 and 434,059,712.30 is: 651,089,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,489,318.70 : 929,233,978.05 = 434,059,712.30 : x
  2. Step 2: Convert to fraction form
    619,489,318.70/929,233,978.05 = 434,059,712.30/x
  3. Step 3: Cross multiply
    619,489,318.70x = 929,233,978.05 × 434,059,712.30
  4. Step 4: Simplify right side
    619,489,318.70x = 403,343,033,171,767,488
  5. Step 5: Solve for x
    x = 403,343,033,171,767,488/619,489,318.70
  6. Step 6: Final answer
    x = 651,089,568.45

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Similar ratio
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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.