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Finding the Fourth Proportional to 644,026.16, 888,738.81 and 386,048.84

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Solution

The fourth proportional to 644,026.16, 888,738.81 and 386,048.84 is: 532,737.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,026.16 : 888,738.81 = 386,048.84 : x
  2. Step 2: Convert to fraction form
    644,026.16/888,738.81 = 386,048.84/x
  3. Step 3: Cross multiply
    644,026.16x = 888,738.81 × 386,048.84
  4. Step 4: Simplify right side
    644,026.16x = 343,096,586,663.48
  5. Step 5: Solve for x
    x = 343,096,586,663.48/644,026.16
  6. Step 6: Final answer
    x = 532,737.03

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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.