Home / 465,921,483.21-642,985,100.87-257,091,077.66

Finding the Fourth Proportional to 465,921,483.21, 642,985,100.87 and 257,091,077.66

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Solution

The fourth proportional to 465,921,483.21, 642,985,100.87 and 257,091,077.66 is: 354,793,110.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,921,483.21 : 642,985,100.87 = 257,091,077.66 : x
  2. Step 2: Convert to fraction form
    465,921,483.21/642,985,100.87 = 257,091,077.66/x
  3. Step 3: Cross multiply
    465,921,483.21x = 642,985,100.87 × 257,091,077.66
  4. Step 4: Simplify right side
    465,921,483.21x = 165,305,732,497,491,712
  5. Step 5: Solve for x
    x = 165,305,732,497,491,712/465,921,483.21
  6. Step 6: Final answer
    x = 354,793,110.97

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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.