Home / 431,790,362.82-647,685,018.95-140,657,010.30

Finding the Fourth Proportional to 431,790,362.82, 647,685,018.95 and 140,657,010.30

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Solution

The fourth proportional to 431,790,362.82, 647,685,018.95 and 140,657,010.30 is: 210,985,344.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,790,362.82 : 647,685,018.95 = 140,657,010.30 : x
  2. Step 2: Convert to fraction form
    431,790,362.82/647,685,018.95 = 140,657,010.30/x
  3. Step 3: Cross multiply
    431,790,362.82x = 647,685,018.95 × 140,657,010.30
  4. Step 4: Simplify right side
    431,790,362.82x = 91,101,438,380,902,576
  5. Step 5: Solve for x
    x = 91,101,438,380,902,576/431,790,362.82
  6. Step 6: Final answer
    x = 210,985,344.34

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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.