Home / 2,921,142.80-4,381,714.20-1,661,430.80

Finding the Fourth Proportional to 2,921,142.80, 4,381,714.20 and 1,661,430.80

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Solution

The fourth proportional to 2,921,142.80, 4,381,714.20 and 1,661,430.80 is: 2,492,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921,142.80 : 4,381,714.20 = 1,661,430.80 : x
  2. Step 2: Convert to fraction form
    2,921,142.80/4,381,714.20 = 1,661,430.80/x
  3. Step 3: Cross multiply
    2,921,142.80x = 4,381,714.20 × 1,661,430.80
  4. Step 4: Simplify right side
    2,921,142.80x = 7,279,914,928,677.36
  5. Step 5: Solve for x
    x = 7,279,914,928,677.36/2,921,142.80
  6. Step 6: Final answer
    x = 2,492,146.20

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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.