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Finding the Fourth Proportional to 550,420.78, 759,258.08 and 346,147.69

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Solution

The fourth proportional to 550,420.78, 759,258.08 and 346,147.69 is: 477,480.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,420.78 : 759,258.08 = 346,147.69 : x
  2. Step 2: Convert to fraction form
    550,420.78/759,258.08 = 346,147.69/x
  3. Step 3: Cross multiply
    550,420.78x = 759,258.08 × 346,147.69
  4. Step 4: Simplify right side
    550,420.78x = 262,815,426,709.55
  5. Step 5: Solve for x
    x = 262,815,426,709.55/550,420.78
  6. Step 6: Final answer
    x = 477,480.94

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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.