Home / 1,386,188.79-2,079,480.25-426,724.40

Finding the Fourth Proportional to 1,386,188.79, 2,079,480.25 and 426,724.40

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Solution

The fourth proportional to 1,386,188.79, 2,079,480.25 and 426,724.40 is: 640,147.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,188.79 : 2,079,480.25 = 426,724.40 : x
  2. Step 2: Convert to fraction form
    1,386,188.79/2,079,480.25 = 426,724.40/x
  3. Step 3: Cross multiply
    1,386,188.79x = 2,079,480.25 × 426,724.40
  4. Step 4: Simplify right side
    1,386,188.79x = 887,364,965,324.88
  5. Step 5: Solve for x
    x = 887,364,965,324.88/1,386,188.79
  6. Step 6: Final answer
    x = 640,147.27

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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.