Home / 639,388.19-882,292.79-352,889.84

Finding the Fourth Proportional to 639,388.19, 882,292.79 and 352,889.84

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Solution

The fourth proportional to 639,388.19, 882,292.79 and 352,889.84 is: 486,953.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,388.19 : 882,292.79 = 352,889.84 : x
  2. Step 2: Convert to fraction form
    639,388.19/882,292.79 = 352,889.84/x
  3. Step 3: Cross multiply
    639,388.19x = 882,292.79 × 352,889.84
  4. Step 4: Simplify right side
    639,388.19x = 311,352,155,320.34
  5. Step 5: Solve for x
    x = 311,352,155,320.34/639,388.19
  6. Step 6: Final answer
    x = 486,953.25

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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.