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Finding the Fourth Proportional to 644,801.95, 889,848.27 and 358,334.11

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Solution

The fourth proportional to 644,801.95, 889,848.27 and 358,334.11 is: 494,513.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,801.95 : 889,848.27 = 358,334.11 : x
  2. Step 2: Convert to fraction form
    644,801.95/889,848.27 = 358,334.11/x
  3. Step 3: Cross multiply
    644,801.95x = 889,848.27 × 358,334.11
  4. Step 4: Simplify right side
    644,801.95x = 318,862,981,624.58
  5. Step 5: Solve for x
    x = 318,862,981,624.58/644,801.95
  6. Step 6: Final answer
    x = 494,513.06

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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.