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Finding the Fourth Proportional to 522,378.81, 720,577.33 and 328,479.64

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Solution

The fourth proportional to 522,378.81, 720,577.33 and 328,479.64 is: 453,109.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,378.81 : 720,577.33 = 328,479.64 : x
  2. Step 2: Convert to fraction form
    522,378.81/720,577.33 = 328,479.64/x
  3. Step 3: Cross multiply
    522,378.81x = 720,577.33 × 328,479.64
  4. Step 4: Simplify right side
    522,378.81x = 236,694,984,286.29
  5. Step 5: Solve for x
    x = 236,694,984,286.29/522,378.81
  6. Step 6: Final answer
    x = 453,109.85

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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.