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Finding the Fourth Proportional to 528,247.62, 728,867.70 and 313,458.71

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Solution

The fourth proportional to 528,247.62, 728,867.70 and 313,458.71 is: 432,505.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,247.62 : 728,867.70 = 313,458.71 : x
  2. Step 2: Convert to fraction form
    528,247.62/728,867.70 = 313,458.71/x
  3. Step 3: Cross multiply
    528,247.62x = 728,867.70 × 313,458.71
  4. Step 4: Simplify right side
    528,247.62x = 228,469,925,358.33
  5. Step 5: Solve for x
    x = 228,469,925,358.33/528,247.62
  6. Step 6: Final answer
    x = 432,505.36

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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.