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Finding the Fourth Proportional to 644,906.04, 889,963.92 and 358,419.98

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Solution

The fourth proportional to 644,906.04, 889,963.92 and 358,419.98 is: 494,616.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,906.04 : 889,963.92 = 358,419.98 : x
  2. Step 2: Convert to fraction form
    644,906.04/889,963.92 = 358,419.98/x
  3. Step 3: Cross multiply
    644,906.04x = 889,963.92 × 358,419.98
  4. Step 4: Simplify right side
    644,906.04x = 318,980,845,957.30
  5. Step 5: Solve for x
    x = 318,980,845,957.30/644,906.04
  6. Step 6: Final answer
    x = 494,616.00

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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.