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Finding the Fourth Proportional to 797,191,999.80, 1,195,787,999.70 and 728,317,246.20

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Solution

The fourth proportional to 797,191,999.80, 1,195,787,999.70 and 728,317,246.20 is: 1,092,475,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    797,191,999.80 : 1,195,787,999.70 = 728,317,246.20 : x
  2. Step 2: Convert to fraction form
    797,191,999.80/1,195,787,999.70 = 728,317,246.20/x
  3. Step 3: Cross multiply
    797,191,999.80x = 1,195,787,999.70 × 728,317,246.20
  4. Step 4: Simplify right side
    797,191,999.80x = 870,913,022,980,510,464
  5. Step 5: Solve for x
    x = 870,913,022,980,510,464/797,191,999.80
  6. Step 6: Final answer
    x = 1,092,475,869.30

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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.