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Finding the Fourth Proportional to 613,582.45, 920,065.68 and 357,497.91

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Solution

The fourth proportional to 613,582.45, 920,065.68 and 357,497.91 is: 536,067.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,582.45 : 920,065.68 = 357,497.91 : x
  2. Step 2: Convert to fraction form
    613,582.45/920,065.68 = 357,497.91/x
  3. Step 3: Cross multiply
    613,582.45x = 920,065.68 × 357,497.91
  4. Step 4: Simplify right side
    613,582.45x = 328,921,557,662.73
  5. Step 5: Solve for x
    x = 328,921,557,662.73/613,582.45
  6. Step 6: Final answer
    x = 536,067.42

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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.