Home / 1,438,340.78-1,984,957.91-785,002.47

Finding the Fourth Proportional to 1,438,340.78, 1,984,957.91 and 785,002.47

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Solution

The fourth proportional to 1,438,340.78, 1,984,957.91 and 785,002.47 is: 1,083,329.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,340.78 : 1,984,957.91 = 785,002.47 : x
  2. Step 2: Convert to fraction form
    1,438,340.78/1,984,957.91 = 785,002.47/x
  3. Step 3: Cross multiply
    1,438,340.78x = 1,984,957.91 × 785,002.47
  4. Step 4: Simplify right side
    1,438,340.78x = 1,558,196,868,658.38
  5. Step 5: Solve for x
    x = 1,558,196,868,658.38/1,438,340.78
  6. Step 6: Final answer
    x = 1,083,329.41

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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.