Home / 720,128.53-1,080,483.26-320,495.97

Finding the Fourth Proportional to 720,128.53, 1,080,483.26 and 320,495.97

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Solution

The fourth proportional to 720,128.53, 1,080,483.26 and 320,495.97 is: 480,873.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,128.53 : 1,080,483.26 = 320,495.97 : x
  2. Step 2: Convert to fraction form
    720,128.53/1,080,483.26 = 320,495.97/x
  3. Step 3: Cross multiply
    720,128.53x = 1,080,483.26 × 320,495.97
  4. Step 4: Simplify right side
    720,128.53x = 346,290,530,482.46
  5. Step 5: Solve for x
    x = 346,290,530,482.46/720,128.53
  6. Step 6: Final answer
    x = 480,873.23

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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.