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Finding the Fourth Proportional to 654,728.96, 981,807.12 and 330,317.46

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Solution

The fourth proportional to 654,728.96, 981,807.12 and 330,317.46 is: 495,331.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,728.96 : 981,807.12 = 330,317.46 : x
  2. Step 2: Convert to fraction form
    654,728.96/981,807.12 = 330,317.46/x
  3. Step 3: Cross multiply
    654,728.96x = 981,807.12 × 330,317.46
  4. Step 4: Simplify right side
    654,728.96x = 324,308,034,088.32
  5. Step 5: Solve for x
    x = 324,308,034,088.32/654,728.96
  6. Step 6: Final answer
    x = 495,331.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.