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Finding the Fourth Proportional to 618,015.66, 852,915.26 and 346,078.61

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Solution

The fourth proportional to 618,015.66, 852,915.26 and 346,078.61 is: 477,618.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,015.66 : 852,915.26 = 346,078.61 : x
  2. Step 2: Convert to fraction form
    618,015.66/852,915.26 = 346,078.61/x
  3. Step 3: Cross multiply
    618,015.66x = 852,915.26 × 346,078.61
  4. Step 4: Simplify right side
    618,015.66x = 295,175,727,427.64
  5. Step 5: Solve for x
    x = 295,175,727,427.64/618,015.66
  6. Step 6: Final answer
    x = 477,618.53

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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.