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Finding the Fourth Proportional to 6,459,957.70, 9,689,936.55 and 5,200,245.70

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Solution

The fourth proportional to 6,459,957.70, 9,689,936.55 and 5,200,245.70 is: 7,800,368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,459,957.70 : 9,689,936.55 = 5,200,245.70 : x
  2. Step 2: Convert to fraction form
    6,459,957.70/9,689,936.55 = 5,200,245.70/x
  3. Step 3: Cross multiply
    6,459,957.70x = 9,689,936.55 × 5,200,245.70
  4. Step 4: Simplify right side
    6,459,957.70x = 50,390,050,877,410.34
  5. Step 5: Solve for x
    x = 50,390,050,877,410.34/6,459,957.70
  6. Step 6: Final answer
    x = 7,800,368.55

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Similar ratio
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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.