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Finding the Fourth Proportional to 7,338,578.40, 10,998,536.40 and 3,543,890.40

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Solution

The fourth proportional to 7,338,578.40, 10,998,536.40 and 3,543,890.40 is: 5,311,329.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338,578.40 : 10,998,536.40 = 3,543,890.40 : x
  2. Step 2: Convert to fraction form
    7,338,578.40/10,998,536.40 = 3,543,890.40/x
  3. Step 3: Cross multiply
    7,338,578.40x = 10,998,536.40 × 3,543,890.40
  4. Step 4: Simplify right side
    7,338,578.40x = 38,977,607,562,010.56
  5. Step 5: Solve for x
    x = 38,977,607,562,010.56/7,338,578.40
  6. Step 6: Final answer
    x = 5,311,329.45

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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.