Home / 789,889.61-1,090,044.38-427,312.62

Finding the Fourth Proportional to 789,889.61, 1,090,044.38 and 427,312.62

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Solution

The fourth proportional to 789,889.61, 1,090,044.38 and 427,312.62 is: 589,689.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,889.61 : 1,090,044.38 = 427,312.62 : x
  2. Step 2: Convert to fraction form
    789,889.61/1,090,044.38 = 427,312.62/x
  3. Step 3: Cross multiply
    789,889.61x = 1,090,044.38 × 427,312.62
  4. Step 4: Simplify right side
    789,889.61x = 465,789,717,797.51
  5. Step 5: Solve for x
    x = 465,789,717,797.51/789,889.61
  6. Step 6: Final answer
    x = 589,689.64

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1.5x scale

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.