Home / 1,992,868.37-2,989,777.07-645,031.20

Finding the Fourth Proportional to 1,992,868.37, 2,989,777.07 and 645,031.20

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Solution

The fourth proportional to 1,992,868.37, 2,989,777.07 and 645,031.20 is: 967,700.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,868.37 : 2,989,777.07 = 645,031.20 : x
  2. Step 2: Convert to fraction form
    1,992,868.37/2,989,777.07 = 645,031.20/x
  3. Step 3: Cross multiply
    1,992,868.37x = 2,989,777.07 × 645,031.20
  4. Step 4: Simplify right side
    1,992,868.37x = 1,928,499,487,969.43
  5. Step 5: Solve for x
    x = 1,928,499,487,969.43/1,992,868.37
  6. Step 6: Final answer
    x = 967,700.39

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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.