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Finding the Fourth Proportional to 445,382.48, 613,803.60 and 316,326.64

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Solution

The fourth proportional to 445,382.48, 613,803.60 and 316,326.64 is: 435,945.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,382.48 : 613,803.60 = 316,326.64 : x
  2. Step 2: Convert to fraction form
    445,382.48/613,803.60 = 316,326.64/x
  3. Step 3: Cross multiply
    445,382.48x = 613,803.60 × 316,326.64
  4. Step 4: Simplify right side
    445,382.48x = 194,162,430,407.90
  5. Step 5: Solve for x
    x = 194,162,430,407.90/445,382.48
  6. Step 6: Final answer
    x = 435,945.37

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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.