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Finding the Fourth Proportional to 427,664, 589,496.40 and 336,876.24

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Solution

The fourth proportional to 427,664, 589,496.40 and 336,876.24 is: 464,353.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,664 : 589,496.40 = 336,876.24 : x
  2. Step 2: Convert to fraction form
    427,664/589,496.40 = 336,876.24/x
  3. Step 3: Cross multiply
    427,664x = 589,496.40 × 336,876.24
  4. Step 4: Simplify right side
    427,664x = 198,587,330,725.54
  5. Step 5: Solve for x
    x = 198,587,330,725.54/427,664
  6. Step 6: Final answer
    x = 464,353.63

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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.