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Finding the Fourth Proportional to 28,188,216.40, 39,378,472.40 and 28,188,216.40

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Solution

The fourth proportional to 28,188,216.40, 39,378,472.40 and 28,188,216.40 is: 39,378,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188,216.40 : 39,378,472.40 = 28,188,216.40 : x
  2. Step 2: Convert to fraction form
    28,188,216.40/39,378,472.40 = 28,188,216.40/x
  3. Step 3: Cross multiply
    28,188,216.40x = 39,378,472.40 × 28,188,216.40
  4. Step 4: Simplify right side
    28,188,216.40x = 1,110,008,901,512,627.25
  5. Step 5: Solve for x
    x = 1,110,008,901,512,627.25/28,188,216.40
  6. Step 6: Final answer
    x = 39,378,472.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.