Home / 1,280,050.43-1,919,432.78-426,820.02

Finding the Fourth Proportional to 1,280,050.43, 1,919,432.78 and 426,820.02

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Solution

The fourth proportional to 1,280,050.43, 1,919,432.78 and 426,820.02 is: 640,015.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,050.43 : 1,919,432.78 = 426,820.02 : x
  2. Step 2: Convert to fraction form
    1,280,050.43/1,919,432.78 = 426,820.02/x
  3. Step 3: Cross multiply
    1,280,050.43x = 1,919,432.78 × 426,820.02
  4. Step 4: Simplify right side
    1,280,050.43x = 819,252,335,414.16
  5. Step 5: Solve for x
    x = 819,252,335,414.16/1,280,050.43
  6. Step 6: Final answer
    x = 640,015.67

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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.