Home / 7,148,942,691.75-9,865,630,168.86-3,934,222,536.94

Finding the Fourth Proportional to 7,148,942,691.75, 9,865,630,168.86 and 3,934,222,536.94

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Solution

The fourth proportional to 7,148,942,691.75, 9,865,630,168.86 and 3,934,222,536.94 is: 5,429,276,219.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148,942,691.75 : 9,865,630,168.86 = 3,934,222,536.94 : x
  2. Step 2: Convert to fraction form
    7,148,942,691.75/9,865,630,168.86 = 3,934,222,536.94/x
  3. Step 3: Cross multiply
    7,148,942,691.75x = 9,865,630,168.86 × 3,934,222,536.94
  4. Step 4: Simplify right side
    7,148,942,691.75x = 38,813,584,551,444,193,280
  5. Step 5: Solve for x
    x = 38,813,584,551,444,193,280/7,148,942,691.75
  6. Step 6: Final answer
    x = 5,429,276,219.58

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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.