Home / 639,101.30-882,279.39-397,461.72

Finding the Fourth Proportional to 639,101.30, 882,279.39 and 397,461.72

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Solution

The fourth proportional to 639,101.30, 882,279.39 and 397,461.72 is: 548,695.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,101.30 : 882,279.39 = 397,461.72 : x
  2. Step 2: Convert to fraction form
    639,101.30/882,279.39 = 397,461.72/x
  3. Step 3: Cross multiply
    639,101.30x = 882,279.39 × 397,461.72
  4. Step 4: Simplify right side
    639,101.30x = 350,672,280,561.40
  5. Step 5: Solve for x
    x = 350,672,280,561.40/639,101.30
  6. Step 6: Final answer
    x = 548,695.93

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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.