Home / 757,690.43-1,045,953.78-499,720.41

Finding the Fourth Proportional to 757,690.43, 1,045,953.78 and 499,720.41

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Solution

The fourth proportional to 757,690.43, 1,045,953.78 and 499,720.41 is: 689,839.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    757,690.43 : 1,045,953.78 = 499,720.41 : x
  2. Step 2: Convert to fraction form
    757,690.43/1,045,953.78 = 499,720.41/x
  3. Step 3: Cross multiply
    757,690.43x = 1,045,953.78 × 499,720.41
  4. Step 4: Simplify right side
    757,690.43x = 522,684,449,908.70
  5. Step 5: Solve for x
    x = 522,684,449,908.70/757,690.43
  6. Step 6: Final answer
    x = 689,839.06

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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.