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Finding the Fourth Proportional to 7,118,609.79, 9,823,677.93 and 3,855,424.35

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Solution

The fourth proportional to 7,118,609.79, 9,823,677.93 and 3,855,424.35 is: 5,320,483.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118,609.79 : 9,823,677.93 = 3,855,424.35 : x
  2. Step 2: Convert to fraction form
    7,118,609.79/9,823,677.93 = 3,855,424.35/x
  3. Step 3: Cross multiply
    7,118,609.79x = 9,823,677.93 × 3,855,424.35
  4. Step 4: Simplify right side
    7,118,609.79x = 37,874,447,097,879.59
  5. Step 5: Solve for x
    x = 37,874,447,097,879.59/7,118,609.79
  6. Step 6: Final answer
    x = 5,320,483.66

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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.