Home / 639,104.40-882,283.67-397,464.81

Finding the Fourth Proportional to 639,104.40, 882,283.67 and 397,464.81

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Solution

The fourth proportional to 639,104.40, 882,283.67 and 397,464.81 is: 548,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,104.40 : 882,283.67 = 397,464.81 : x
  2. Step 2: Convert to fraction form
    639,104.40/882,283.67 = 397,464.81/x
  3. Step 3: Cross multiply
    639,104.40x = 882,283.67 × 397,464.81
  4. Step 4: Simplify right side
    639,104.40x = 350,676,709,275.33
  5. Step 5: Solve for x
    x = 350,676,709,275.33/639,104.40
  6. Step 6: Final answer
    x = 548,700.20

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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.