Home / 1,007,542.80-1,388,940.24-765,405

Finding the Fourth Proportional to 1,007,542.80, 1,388,940.24 and 765,405

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Solution

The fourth proportional to 1,007,542.80, 1,388,940.24 and 765,405 is: 1,055,143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,542.80 : 1,388,940.24 = 765,405 : x
  2. Step 2: Convert to fraction form
    1,007,542.80/1,388,940.24 = 765,405/x
  3. Step 3: Cross multiply
    1,007,542.80x = 1,388,940.24 × 765,405
  4. Step 4: Simplify right side
    1,007,542.80x = 1,063,101,804,397.20
  5. Step 5: Solve for x
    x = 1,063,101,804,397.20/1,007,542.80
  6. Step 6: Final answer
    x = 1,055,143.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.