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Finding the Fourth Proportional to 618,615.60, 853,760.60 and 346,757.04

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Solution

The fourth proportional to 618,615.60, 853,760.60 and 346,757.04 is: 478,564.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,615.60 : 853,760.60 = 346,757.04 : x
  2. Step 2: Convert to fraction form
    618,615.60/853,760.60 = 346,757.04/x
  3. Step 3: Cross multiply
    618,615.60x = 853,760.60 × 346,757.04
  4. Step 4: Simplify right side
    618,615.60x = 296,047,498,524.62
  5. Step 5: Solve for x
    x = 296,047,498,524.62/618,615.60
  6. Step 6: Final answer
    x = 478,564.55

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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.