Home / 1,338,628.23-2,008,740.21-485,766.42

Finding the Fourth Proportional to 1,338,628.23, 2,008,740.21 and 485,766.42

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Solution

The fourth proportional to 1,338,628.23, 2,008,740.21 and 485,766.42 is: 728,939.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,628.23 : 2,008,740.21 = 485,766.42 : x
  2. Step 2: Convert to fraction form
    1,338,628.23/2,008,740.21 = 485,766.42/x
  3. Step 3: Cross multiply
    1,338,628.23x = 2,008,740.21 × 485,766.42
  4. Step 4: Simplify right side
    1,338,628.23x = 975,778,540,521.75
  5. Step 5: Solve for x
    x = 975,778,540,521.75/1,338,628.23
  6. Step 6: Final answer
    x = 728,939.16

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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.