Home / 639,070.38-881,919.97-352,598.90

Finding the Fourth Proportional to 639,070.38, 881,919.97 and 352,598.90

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Solution

The fourth proportional to 639,070.38, 881,919.97 and 352,598.90 is: 486,588.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,070.38 : 881,919.97 = 352,598.90 : x
  2. Step 2: Convert to fraction form
    639,070.38/881,919.97 = 352,598.90/x
  3. Step 3: Cross multiply
    639,070.38x = 881,919.97 × 352,598.90
  4. Step 4: Simplify right side
    639,070.38x = 310,964,006,018.94
  5. Step 5: Solve for x
    x = 310,964,006,018.94/639,070.38
  6. Step 6: Final answer
    x = 486,588.04

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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.