Home / 465,921,486.21-642,985,105.02-257,091,080.67

Finding the Fourth Proportional to 465,921,486.21, 642,985,105.02 and 257,091,080.67

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Solution

The fourth proportional to 465,921,486.21, 642,985,105.02 and 257,091,080.67 is: 354,793,115.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,921,486.21 : 642,985,105.02 = 257,091,080.67 : x
  2. Step 2: Convert to fraction form
    465,921,486.21/642,985,105.02 = 257,091,080.67/x
  3. Step 3: Cross multiply
    465,921,486.21x = 642,985,105.02 × 257,091,080.67
  4. Step 4: Simplify right side
    465,921,486.21x = 165,305,735,504,305,216
  5. Step 5: Solve for x
    x = 165,305,735,504,305,216/465,921,486.21
  6. Step 6: Final answer
    x = 354,793,115.14

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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.