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Finding the Fourth Proportional to 644,328.47, 889,184.28 and 353,952.28

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Solution

The fourth proportional to 644,328.47, 889,184.28 and 353,952.28 is: 488,460.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,328.47 : 889,184.28 = 353,952.28 : x
  2. Step 2: Convert to fraction form
    644,328.47/889,184.28 = 353,952.28/x
  3. Step 3: Cross multiply
    644,328.47x = 889,184.28 × 353,952.28
  4. Step 4: Simplify right side
    644,328.47x = 314,728,805,684.96
  5. Step 5: Solve for x
    x = 314,728,805,684.96/644,328.47
  6. Step 6: Final answer
    x = 488,460.19

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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.