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Finding the Fourth Proportional to 519,589.62, 717,528.90 and 491,284.58

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Solution

The fourth proportional to 519,589.62, 717,528.90 and 491,284.58 is: 678,440.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,589.62 : 717,528.90 = 491,284.58 : x
  2. Step 2: Convert to fraction form
    519,589.62/717,528.90 = 491,284.58/x
  3. Step 3: Cross multiply
    519,589.62x = 717,528.90 × 491,284.58
  4. Step 4: Simplify right side
    519,589.62x = 352,510,884,274.36
  5. Step 5: Solve for x
    x = 352,510,884,274.36/519,589.62
  6. Step 6: Final answer
    x = 678,440.97

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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.