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Finding the Fourth Proportional to 8,159,809.80, 12,239,714.70 and 4,912,552.20

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Solution

The fourth proportional to 8,159,809.80, 12,239,714.70 and 4,912,552.20 is: 7,368,828.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,159,809.80 : 12,239,714.70 = 4,912,552.20 : x
  2. Step 2: Convert to fraction form
    8,159,809.80/12,239,714.70 = 4,912,552.20/x
  3. Step 3: Cross multiply
    8,159,809.80x = 12,239,714.70 × 4,912,552.20
  4. Step 4: Simplify right side
    8,159,809.80x = 60,128,237,376,857.34
  5. Step 5: Solve for x
    x = 60,128,237,376,857.34/8,159,809.80
  6. Step 6: Final answer
    x = 7,368,828.30

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1.5x scale

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.