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Finding the Fourth Proportional to 8,622,752.80, 12,912,010.80 and 8,224,621.60

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Solution

The fourth proportional to 8,622,752.80, 12,912,010.80 and 8,224,621.60 is: 12,315,835.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622,752.80 : 12,912,010.80 = 8,224,621.60 : x
  2. Step 2: Convert to fraction form
    8,622,752.80/12,912,010.80 = 8,224,621.60/x
  3. Step 3: Cross multiply
    8,622,752.80x = 12,912,010.80 × 8,224,621.60
  4. Step 4: Simplify right side
    8,622,752.80x = 106,196,402,925,113.28
  5. Step 5: Solve for x
    x = 106,196,402,925,113.28/8,622,752.80
  6. Step 6: Final answer
    x = 12,315,835.25

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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.