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Finding the Fourth Proportional to 486,603.80, 729,905.70 and 352,856.60

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Solution

The fourth proportional to 486,603.80, 729,905.70 and 352,856.60 is: 529,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,603.80 : 729,905.70 = 352,856.60 : x
  2. Step 2: Convert to fraction form
    486,603.80/729,905.70 = 352,856.60/x
  3. Step 3: Cross multiply
    486,603.80x = 729,905.70 × 352,856.60
  4. Step 4: Simplify right side
    486,603.80x = 257,552,043,622.62
  5. Step 5: Solve for x
    x = 257,552,043,622.62/486,603.80
  6. Step 6: Final answer
    x = 529,284.90

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Similar ratio
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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.