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Finding the Fourth Proportional to 618,796.53, 853,978.68 and 346,864.55

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Solution

The fourth proportional to 618,796.53, 853,978.68 and 346,864.55 is: 478,695.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,796.53 : 853,978.68 = 346,864.55 : x
  2. Step 2: Convert to fraction form
    618,796.53/853,978.68 = 346,864.55/x
  3. Step 3: Cross multiply
    618,796.53x = 853,978.68 × 346,864.55
  4. Step 4: Simplify right side
    618,796.53x = 296,214,926,277.90
  5. Step 5: Solve for x
    x = 296,214,926,277.90/618,796.53
  6. Step 6: Final answer
    x = 478,695.20

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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.