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Finding the Fourth Proportional to 816,793,447.92, 1,127,591,055 and 630,736,784.88

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Solution

The fourth proportional to 816,793,447.92, 1,127,591,055 and 630,736,784.88 is: 870,738,077.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,793,447.92 : 1,127,591,055 = 630,736,784.88 : x
  2. Step 2: Convert to fraction form
    816,793,447.92/1,127,591,055 = 630,736,784.88/x
  3. Step 3: Cross multiply
    816,793,447.92x = 1,127,591,055 × 630,736,784.88
  4. Step 4: Simplify right side
    816,793,447.92x = 711,213,156,690,147,200
  5. Step 5: Solve for x
    x = 711,213,156,690,147,200/816,793,447.92
  6. Step 6: Final answer
    x = 870,738,077.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.