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Finding the Fourth Proportional to 445,378.52, 613,798.06 and 316,322.64

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Solution

The fourth proportional to 445,378.52, 613,798.06 and 316,322.64 is: 435,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,378.52 : 613,798.06 = 316,322.64 : x
  2. Step 2: Convert to fraction form
    445,378.52/613,798.06 = 316,322.64/x
  3. Step 3: Cross multiply
    445,378.52x = 613,798.06 × 316,322.64
  4. Step 4: Simplify right side
    445,378.52x = 194,158,222,766.08
  5. Step 5: Solve for x
    x = 194,158,222,766.08/445,378.52
  6. Step 6: Final answer
    x = 435,939.80

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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.