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Finding the Fourth Proportional to 618,112.48, 852,985.92 and 346,179.28

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Solution

The fourth proportional to 618,112.48, 852,985.92 and 346,179.28 is: 477,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,112.48 : 852,985.92 = 346,179.28 : x
  2. Step 2: Convert to fraction form
    618,112.48/852,985.92 = 346,179.28/x
  3. Step 3: Cross multiply
    618,112.48x = 852,985.92 × 346,179.28
  4. Step 4: Simplify right side
    618,112.48x = 295,286,051,635.74
  5. Step 5: Solve for x
    x = 295,286,051,635.74/618,112.48
  6. Step 6: Final answer
    x = 477,722.20

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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.