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Finding the Fourth Proportional to 618,425.64, 853,412.51 and 346,505.00

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Solution

The fourth proportional to 618,425.64, 853,412.51 and 346,505.00 is: 478,168.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,425.64 : 853,412.51 = 346,505.00 : x
  2. Step 2: Convert to fraction form
    618,425.64/853,412.51 = 346,505.00/x
  3. Step 3: Cross multiply
    618,425.64x = 853,412.51 × 346,505.00
  4. Step 4: Simplify right side
    618,425.64x = 295,711,695,777.96
  5. Step 5: Solve for x
    x = 295,711,695,777.96/618,425.64
  6. Step 6: Final answer
    x = 478,168.56

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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.