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Finding the Fourth Proportional to 644,266.74, 889,095.39 and 353,885.08

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Solution

The fourth proportional to 644,266.74, 889,095.39 and 353,885.08 is: 488,365.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,266.74 : 889,095.39 = 353,885.08 : x
  2. Step 2: Convert to fraction form
    644,266.74/889,095.39 = 353,885.08/x
  3. Step 3: Cross multiply
    644,266.74x = 889,095.39 × 353,885.08
  4. Step 4: Simplify right side
    644,266.74x = 314,637,588,834.45
  5. Step 5: Solve for x
    x = 314,637,588,834.45/644,266.74
  6. Step 6: Final answer
    x = 488,365.41

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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.