Home / 642,025,542.24-961,403,456.61-423,011,896.38

Finding the Fourth Proportional to 642,025,542.24, 961,403,456.61 and 423,011,896.38

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Solution

The fourth proportional to 642,025,542.24, 961,403,456.61 and 423,011,896.38 is: 633,440,685.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,025,542.24 : 961,403,456.61 = 423,011,896.38 : x
  2. Step 2: Convert to fraction form
    642,025,542.24/961,403,456.61 = 423,011,896.38/x
  3. Step 3: Cross multiply
    642,025,542.24x = 961,403,456.61 × 423,011,896.38
  4. Step 4: Simplify right side
    642,025,542.24x = 406,685,099,366,883,136
  5. Step 5: Solve for x
    x = 406,685,099,366,883,136/642,025,542.24
  6. Step 6: Final answer
    x = 633,440,685.16

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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.