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Finding the Fourth Proportional to 644,572.16, 889,261.44 and 475,208.96

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Solution

The fourth proportional to 644,572.16, 889,261.44 and 475,208.96 is: 655,605.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,572.16 : 889,261.44 = 475,208.96 : x
  2. Step 2: Convert to fraction form
    644,572.16/889,261.44 = 475,208.96/x
  3. Step 3: Cross multiply
    644,572.16x = 889,261.44 × 475,208.96
  4. Step 4: Simplify right side
    644,572.16x = 422,585,004,070.50
  5. Step 5: Solve for x
    x = 422,585,004,070.50/644,572.16
  6. Step 6: Final answer
    x = 655,605.42

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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.