Home / 1,326,500.82-1,990,138.41-427,924.08

Finding the Fourth Proportional to 1,326,500.82, 1,990,138.41 and 427,924.08

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Solution

The fourth proportional to 1,326,500.82, 1,990,138.41 and 427,924.08 is: 642,011.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,500.82 : 1,990,138.41 = 427,924.08 : x
  2. Step 2: Convert to fraction form
    1,326,500.82/1,990,138.41 = 427,924.08/x
  3. Step 3: Cross multiply
    1,326,500.82x = 1,990,138.41 × 427,924.08
  4. Step 4: Simplify right side
    1,326,500.82x = 851,628,148,171.91
  5. Step 5: Solve for x
    x = 851,628,148,171.91/1,326,500.82
  6. Step 6: Final answer
    x = 642,011.02

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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.