Home / 644,177.13-889,046.45-389,530.14

Finding the Fourth Proportional to 644,177.13, 889,046.45 and 389,530.14

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Solution

The fourth proportional to 644,177.13, 889,046.45 and 389,530.14 is: 537,601.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,177.13 : 889,046.45 = 389,530.14 : x
  2. Step 2: Convert to fraction form
    644,177.13/889,046.45 = 389,530.14/x
  3. Step 3: Cross multiply
    644,177.13x = 889,046.45 × 389,530.14
  4. Step 4: Simplify right side
    644,177.13x = 346,310,388,135.00
  5. Step 5: Solve for x
    x = 346,310,388,135.00/644,177.13
  6. Step 6: Final answer
    x = 537,601.18

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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.