Home / 639,077.40-958,616.10-403,464.60

Finding the Fourth Proportional to 639,077.40, 958,616.10 and 403,464.60

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Solution

The fourth proportional to 639,077.40, 958,616.10 and 403,464.60 is: 605,196.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,077.40 : 958,616.10 = 403,464.60 : x
  2. Step 2: Convert to fraction form
    639,077.40/958,616.10 = 403,464.60/x
  3. Step 3: Cross multiply
    639,077.40x = 958,616.10 × 403,464.60
  4. Step 4: Simplify right side
    639,077.40x = 386,767,661,340.06
  5. Step 5: Solve for x
    x = 386,767,661,340.06/639,077.40
  6. Step 6: Final answer
    x = 605,196.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.