Home / 438,983,721.43-658,212,606.66-139,723,384.87

Finding the Fourth Proportional to 438,983,721.43, 658,212,606.66 and 139,723,384.87

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Solution

The fourth proportional to 438,983,721.43, 658,212,606.66 and 139,723,384.87 is: 209,501,375.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,983,721.43 : 658,212,606.66 = 139,723,384.87 : x
  2. Step 2: Convert to fraction form
    438,983,721.43/658,212,606.66 = 139,723,384.87/x
  3. Step 3: Cross multiply
    438,983,721.43x = 658,212,606.66 × 139,723,384.87
  4. Step 4: Simplify right side
    438,983,721.43x = 91,967,693,363,350,048
  5. Step 5: Solve for x
    x = 91,967,693,363,350,048/438,983,721.43
  6. Step 6: Final answer
    x = 209,501,375.28

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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.