Home / 1,287,181.80-1,930,772.70-340,648.20

Finding the Fourth Proportional to 1,287,181.80, 1,930,772.70 and 340,648.20

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Solution

The fourth proportional to 1,287,181.80, 1,930,772.70 and 340,648.20 is: 510,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,181.80 : 1,930,772.70 = 340,648.20 : x
  2. Step 2: Convert to fraction form
    1,287,181.80/1,930,772.70 = 340,648.20/x
  3. Step 3: Cross multiply
    1,287,181.80x = 1,930,772.70 × 340,648.20
  4. Step 4: Simplify right side
    1,287,181.80x = 657,714,244,864.14
  5. Step 5: Solve for x
    x = 657,714,244,864.14/1,287,181.80
  6. Step 6: Final answer
    x = 510,972.30

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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.