Home / 494,085.02-681,819.60-279,220.40

Finding the Fourth Proportional to 494,085.02, 681,819.60 and 279,220.40

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Solution

The fourth proportional to 494,085.02, 681,819.60 and 279,220.40 is: 385,314.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,085.02 : 681,819.60 = 279,220.40 : x
  2. Step 2: Convert to fraction form
    494,085.02/681,819.60 = 279,220.40/x
  3. Step 3: Cross multiply
    494,085.02x = 681,819.60 × 279,220.40
  4. Step 4: Simplify right side
    494,085.02x = 190,377,941,439.84
  5. Step 5: Solve for x
    x = 190,377,941,439.84/494,085.02
  6. Step 6: Final answer
    x = 385,314.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.