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Finding the Fourth Proportional to 559,662.28, 772,336.53 and 317,958.10

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Solution

The fourth proportional to 559,662.28, 772,336.53 and 317,958.10 is: 438,783.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,662.28 : 772,336.53 = 317,958.10 : x
  2. Step 2: Convert to fraction form
    559,662.28/772,336.53 = 317,958.10/x
  3. Step 3: Cross multiply
    559,662.28x = 772,336.53 × 317,958.10
  4. Step 4: Simplify right side
    559,662.28x = 245,570,653,708.55
  5. Step 5: Solve for x
    x = 245,570,653,708.55/559,662.28
  6. Step 6: Final answer
    x = 438,783.64

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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.