Home / 1,386,608.10-2,079,912.15-640,112.10

Finding the Fourth Proportional to 1,386,608.10, 2,079,912.15 and 640,112.10

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Solution

The fourth proportional to 1,386,608.10, 2,079,912.15 and 640,112.10 is: 960,168.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,608.10 : 2,079,912.15 = 640,112.10 : x
  2. Step 2: Convert to fraction form
    1,386,608.10/2,079,912.15 = 640,112.10/x
  3. Step 3: Cross multiply
    1,386,608.10x = 2,079,912.15 × 640,112.10
  4. Step 4: Simplify right side
    1,386,608.10x = 1,331,376,934,152.01
  5. Step 5: Solve for x
    x = 1,331,376,934,152.01/1,386,608.10
  6. Step 6: Final answer
    x = 960,168.15

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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.