Home / 644,610.78-966,642.80-307,261.17

Finding the Fourth Proportional to 644,610.78, 966,642.80 and 307,261.17

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Solution

The fourth proportional to 644,610.78, 966,642.80 and 307,261.17 is: 460,761.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,610.78 : 966,642.80 = 307,261.17 : x
  2. Step 2: Convert to fraction form
    644,610.78/966,642.80 = 307,261.17/x
  3. Step 3: Cross multiply
    644,610.78x = 966,642.80 × 307,261.17
  4. Step 4: Simplify right side
    644,610.78x = 297,011,796,163.77
  5. Step 5: Solve for x
    x = 297,011,796,163.77/644,610.78
  6. Step 6: Final answer
    x = 460,761.45

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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.