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Finding the Fourth Proportional to 428,755.53, 590,197.62 and 370,585.80

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Solution

The fourth proportional to 428,755.53, 590,197.62 and 370,585.80 is: 510,124.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,755.53 : 590,197.62 = 370,585.80 : x
  2. Step 2: Convert to fraction form
    428,755.53/590,197.62 = 370,585.80/x
  3. Step 3: Cross multiply
    428,755.53x = 590,197.62 × 370,585.80
  4. Step 4: Simplify right side
    428,755.53x = 218,718,857,165.80
  5. Step 5: Solve for x
    x = 218,718,857,165.80/428,755.53
  6. Step 6: Final answer
    x = 510,124.87

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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.