Home / 645,877.20-968,124.60-290,830.80

Finding the Fourth Proportional to 645,877.20, 968,124.60 and 290,830.80

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Solution

The fourth proportional to 645,877.20, 968,124.60 and 290,830.80 is: 435,934.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,877.20 : 968,124.60 = 290,830.80 : x
  2. Step 2: Convert to fraction form
    645,877.20/968,124.60 = 290,830.80/x
  3. Step 3: Cross multiply
    645,877.20x = 968,124.60 × 290,830.80
  4. Step 4: Simplify right side
    645,877.20x = 281,560,451,917.68
  5. Step 5: Solve for x
    x = 281,560,451,917.68/645,877.20
  6. Step 6: Final answer
    x = 435,934.96

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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.