Home / 789,863.68-1,090,012.20-427,287.46

Finding the Fourth Proportional to 789,863.68, 1,090,012.20 and 427,287.46

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Solution

The fourth proportional to 789,863.68, 1,090,012.20 and 427,287.46 is: 589,656.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,863.68 : 1,090,012.20 = 427,287.46 : x
  2. Step 2: Convert to fraction form
    789,863.68/1,090,012.20 = 427,287.46/x
  3. Step 3: Cross multiply
    789,863.68x = 1,090,012.20 × 427,287.46
  4. Step 4: Simplify right side
    789,863.68x = 465,748,544,307.01
  5. Step 5: Solve for x
    x = 465,748,544,307.01/789,863.68
  6. Step 6: Final answer
    x = 589,656.87

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Why These Related Problems?

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