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Finding the Fourth Proportional to 7,148,515.92, 9,865,051.92 and 3,885,329.67

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Solution

The fourth proportional to 7,148,515.92, 9,865,051.92 and 3,885,329.67 is: 5,361,809.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148,515.92 : 9,865,051.92 = 3,885,329.67 : x
  2. Step 2: Convert to fraction form
    7,148,515.92/9,865,051.92 = 3,885,329.67/x
  3. Step 3: Cross multiply
    7,148,515.92x = 9,865,051.92 × 3,885,329.67
  4. Step 4: Simplify right side
    7,148,515.92x = 38,328,978,920,866.47
  5. Step 5: Solve for x
    x = 38,328,978,920,866.47/7,148,515.92
  6. Step 6: Final answer
    x = 5,361,809.27

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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.