Home / 644,849.91-889,616.84-402,712.11

Finding the Fourth Proportional to 644,849.91, 889,616.84 and 402,712.11

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Solution

The fourth proportional to 644,849.91, 889,616.84 and 402,712.11 is: 555,570.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,849.91 : 889,616.84 = 402,712.11 : x
  2. Step 2: Convert to fraction form
    644,849.91/889,616.84 = 402,712.11/x
  3. Step 3: Cross multiply
    644,849.91x = 889,616.84 × 402,712.11
  4. Step 4: Simplify right side
    644,849.91x = 358,259,472,714.37
  5. Step 5: Solve for x
    x = 358,259,472,714.37/644,849.91
  6. Step 6: Final answer
    x = 555,570.32

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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.