Home / 1,080,005.20-1,620,007.80-870,053.20

Finding the Fourth Proportional to 1,080,005.20, 1,620,007.80 and 870,053.20

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Solution

The fourth proportional to 1,080,005.20, 1,620,007.80 and 870,053.20 is: 1,305,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,005.20 : 1,620,007.80 = 870,053.20 : x
  2. Step 2: Convert to fraction form
    1,080,005.20/1,620,007.80 = 870,053.20/x
  3. Step 3: Cross multiply
    1,080,005.20x = 1,620,007.80 × 870,053.20
  4. Step 4: Simplify right side
    1,080,005.20x = 1,409,492,970,414.96
  5. Step 5: Solve for x
    x = 1,409,492,970,414.96/1,080,005.20
  6. Step 6: Final answer
    x = 1,305,079.80

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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.