Home / 644,176.56-889,045.31-389,668.08

Finding the Fourth Proportional to 644,176.56, 889,045.31 and 389,668.08

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Solution

The fourth proportional to 644,176.56, 889,045.31 and 389,668.08 is: 537,791.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,176.56 : 889,045.31 = 389,668.08 : x
  2. Step 2: Convert to fraction form
    644,176.56/889,045.31 = 389,668.08/x
  3. Step 3: Cross multiply
    644,176.56x = 889,045.31 × 389,668.08
  4. Step 4: Simplify right side
    644,176.56x = 346,432,577,032.36
  5. Step 5: Solve for x
    x = 346,432,577,032.36/644,176.56
  6. Step 6: Final answer
    x = 537,791.34

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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.