Home / 811,614.64-1,120,386.93-485,042.86

Finding the Fourth Proportional to 811,614.64, 1,120,386.93 and 485,042.86

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Solution

The fourth proportional to 811,614.64, 1,120,386.93 and 485,042.86 is: 669,573.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,614.64 : 1,120,386.93 = 485,042.86 : x
  2. Step 2: Convert to fraction form
    811,614.64/1,120,386.93 = 485,042.86/x
  3. Step 3: Cross multiply
    811,614.64x = 1,120,386.93 × 485,042.86
  4. Step 4: Simplify right side
    811,614.64x = 543,435,680,833.82
  5. Step 5: Solve for x
    x = 543,435,680,833.82/811,614.64
  6. Step 6: Final answer
    x = 669,573.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.