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Finding the Fourth Proportional to 644,802.95, 889,849.65 and 358,335.11

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Solution

The fourth proportional to 644,802.95, 889,849.65 and 358,335.11 is: 494,514.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,802.95 : 889,849.65 = 358,335.11 : x
  2. Step 2: Convert to fraction form
    644,802.95/889,849.65 = 358,335.11/x
  3. Step 3: Cross multiply
    644,802.95x = 889,849.65 × 358,335.11
  4. Step 4: Simplify right side
    644,802.95x = 318,864,372,216.21
  5. Step 5: Solve for x
    x = 318,864,372,216.21/644,802.95
  6. Step 6: Final answer
    x = 494,514.44

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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.