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Finding the Fourth Proportional to 609,801.65, 916,022.35 and 396,459.83

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Solution

The fourth proportional to 609,801.65, 916,022.35 and 396,459.83 is: 595,547.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,801.65 : 916,022.35 = 396,459.83 : x
  2. Step 2: Convert to fraction form
    609,801.65/916,022.35 = 396,459.83/x
  3. Step 3: Cross multiply
    609,801.65x = 916,022.35 × 396,459.83
  4. Step 4: Simplify right side
    609,801.65x = 363,166,067,942.83
  5. Step 5: Solve for x
    x = 363,166,067,942.83/609,801.65
  6. Step 6: Final answer
    x = 595,547.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.