Home / 1,609,104.80-2,415,212.40-811,287.20

Finding the Fourth Proportional to 1,609,104.80, 2,415,212.40 and 811,287.20

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Solution

The fourth proportional to 1,609,104.80, 2,415,212.40 and 811,287.20 is: 1,217,714.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609,104.80 : 2,415,212.40 = 811,287.20 : x
  2. Step 2: Convert to fraction form
    1,609,104.80/2,415,212.40 = 811,287.20/x
  3. Step 3: Cross multiply
    1,609,104.80x = 2,415,212.40 × 811,287.20
  4. Step 4: Simplify right side
    1,609,104.80x = 1,959,430,905,401.28
  5. Step 5: Solve for x
    x = 1,959,430,905,401.28/1,609,104.80
  6. Step 6: Final answer
    x = 1,217,714.91

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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.