Home / 718,512.40-1,076,440.20-419,136.40

Finding the Fourth Proportional to 718,512.40, 1,076,440.20 and 419,136.40

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Solution

The fourth proportional to 718,512.40, 1,076,440.20 and 419,136.40 is: 627,929.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,512.40 : 1,076,440.20 = 419,136.40 : x
  2. Step 2: Convert to fraction form
    718,512.40/1,076,440.20 = 419,136.40/x
  3. Step 3: Cross multiply
    718,512.40x = 1,076,440.20 × 419,136.40
  4. Step 4: Simplify right side
    718,512.40x = 451,175,270,243.28
  5. Step 5: Solve for x
    x = 451,175,270,243.28/718,512.40
  6. Step 6: Final answer
    x = 627,929.69

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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.