Home / 1,992,904.60-2,989,794.30-644,837.80

Finding the Fourth Proportional to 1,992,904.60, 2,989,794.30 and 644,837.80

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Solution

The fourth proportional to 1,992,904.60, 2,989,794.30 and 644,837.80 is: 967,398.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,904.60 : 2,989,794.30 = 644,837.80 : x
  2. Step 2: Convert to fraction form
    1,992,904.60/2,989,794.30 = 644,837.80/x
  3. Step 3: Cross multiply
    1,992,904.60x = 2,989,794.30 × 644,837.80
  4. Step 4: Simplify right side
    1,992,904.60x = 1,927,932,378,864.54
  5. Step 5: Solve for x
    x = 1,927,932,378,864.54/1,992,904.60
  6. Step 6: Final answer
    x = 967,398.23

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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.