Home / 1,993,192.80-2,989,400.40-645,028.80

Finding the Fourth Proportional to 1,993,192.80, 2,989,400.40 and 645,028.80

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Solution

The fourth proportional to 1,993,192.80, 2,989,400.40 and 645,028.80 is: 967,417.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,192.80 : 2,989,400.40 = 645,028.80 : x
  2. Step 2: Convert to fraction form
    1,993,192.80/2,989,400.40 = 645,028.80/x
  3. Step 3: Cross multiply
    1,993,192.80x = 2,989,400.40 × 645,028.80
  4. Step 4: Simplify right side
    1,993,192.80x = 1,928,249,352,731.52
  5. Step 5: Solve for x
    x = 1,928,249,352,731.52/1,993,192.80
  6. Step 6: Final answer
    x = 967,417.38

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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.