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Finding the Fourth Proportional to 400,404,611.40, 600,606,917.10 and 170,381,200.20

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Solution

The fourth proportional to 400,404,611.40, 600,606,917.10 and 170,381,200.20 is: 255,571,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,404,611.40 : 600,606,917.10 = 170,381,200.20 : x
  2. Step 2: Convert to fraction form
    400,404,611.40/600,606,917.10 = 170,381,200.20/x
  3. Step 3: Cross multiply
    400,404,611.40x = 600,606,917.10 × 170,381,200.20
  4. Step 4: Simplify right side
    400,404,611.40x = 102,332,127,383,919,904
  5. Step 5: Solve for x
    x = 102,332,127,383,919,904/400,404,611.40
  6. Step 6: Final answer
    x = 255,571,800.30

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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.