Home / 644,821.72-889,835.25-369,170.35

Finding the Fourth Proportional to 644,821.72, 889,835.25 and 369,170.35

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Solution

The fourth proportional to 644,821.72, 889,835.25 and 369,170.35 is: 509,444.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,821.72 : 889,835.25 = 369,170.35 : x
  2. Step 2: Convert to fraction form
    644,821.72/889,835.25 = 369,170.35/x
  3. Step 3: Cross multiply
    644,821.72x = 889,835.25 × 369,170.35
  4. Step 4: Simplify right side
    644,821.72x = 328,500,790,684.84
  5. Step 5: Solve for x
    x = 328,500,790,684.84/644,821.72
  6. Step 6: Final answer
    x = 509,444.36

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1.5x scale

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.