Home / 639,100.92-882,278.87-397,461.34

Finding the Fourth Proportional to 639,100.92, 882,278.87 and 397,461.34

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Solution

The fourth proportional to 639,100.92, 882,278.87 and 397,461.34 is: 548,695.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,100.92 : 882,278.87 = 397,461.34 : x
  2. Step 2: Convert to fraction form
    639,100.92/882,278.87 = 397,461.34/x
  3. Step 3: Cross multiply
    639,100.92x = 882,278.87 × 397,461.34
  4. Step 4: Simplify right side
    639,100.92x = 350,671,743,275.15
  5. Step 5: Solve for x
    x = 350,671,743,275.15/639,100.92
  6. Step 6: Final answer
    x = 548,695.41

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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.