Home / 629,420.78-868,600.66-342,940.87

Finding the Fourth Proportional to 629,420.78, 868,600.66 and 342,940.87

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Solution

The fourth proportional to 629,420.78, 868,600.66 and 342,940.87 is: 473,258.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,420.78 : 868,600.66 = 342,940.87 : x
  2. Step 2: Convert to fraction form
    629,420.78/868,600.66 = 342,940.87/x
  3. Step 3: Cross multiply
    629,420.78x = 868,600.66 × 342,940.87
  4. Step 4: Simplify right side
    629,420.78x = 297,878,666,022.97
  5. Step 5: Solve for x
    x = 297,878,666,022.97/629,420.78
  6. Step 6: Final answer
    x = 473,258.39

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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.