Home / 721,035.24-1,080,969.63-440,457.72

Finding the Fourth Proportional to 721,035.24, 1,080,969.63 and 440,457.72

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Solution

The fourth proportional to 721,035.24, 1,080,969.63 and 440,457.72 is: 660,330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,035.24 : 1,080,969.63 = 440,457.72 : x
  2. Step 2: Convert to fraction form
    721,035.24/1,080,969.63 = 440,457.72/x
  3. Step 3: Cross multiply
    721,035.24x = 1,080,969.63 × 440,457.72
  4. Step 4: Simplify right side
    721,035.24x = 476,121,418,619.04
  5. Step 5: Solve for x
    x = 476,121,418,619.04/721,035.24
  6. Step 6: Final answer
    x = 660,330.30

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1.5x scale

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.