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Finding the Fourth Proportional to 889,801.66, 1,334,930 and 258,715.47

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Solution

The fourth proportional to 889,801.66, 1,334,930 and 258,715.47 is: 388,139.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,801.66 : 1,334,930 = 258,715.47 : x
  2. Step 2: Convert to fraction form
    889,801.66/1,334,930 = 258,715.47/x
  3. Step 3: Cross multiply
    889,801.66x = 1,334,930 × 258,715.47
  4. Step 4: Simplify right side
    889,801.66x = 345,367,042,367.10
  5. Step 5: Solve for x
    x = 345,367,042,367.10/889,801.66
  6. Step 6: Final answer
    x = 388,139.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.