Home / 8,612,538.76-12,918,378.72-3,220,792.80

Finding the Fourth Proportional to 8,612,538.76, 12,918,378.72 and 3,220,792.80

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Solution

The fourth proportional to 8,612,538.76, 12,918,378.72 and 3,220,792.80 is: 4,831,028.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612,538.76 : 12,918,378.72 = 3,220,792.80 : x
  2. Step 2: Convert to fraction form
    8,612,538.76/12,918,378.72 = 3,220,792.80/x
  3. Step 3: Cross multiply
    8,612,538.76x = 12,918,378.72 × 3,220,792.80
  4. Step 4: Simplify right side
    8,612,538.76x = 41,607,421,169,049.22
  5. Step 5: Solve for x
    x = 41,607,421,169,049.22/8,612,538.76
  6. Step 6: Final answer
    x = 4,831,028.61

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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.