Home / 1,388,913.21-2,083,569.41-429,443.64

Finding the Fourth Proportional to 1,388,913.21, 2,083,569.41 and 429,443.64

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Solution

The fourth proportional to 1,388,913.21, 2,083,569.41 and 429,443.64 is: 644,227.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,913.21 : 2,083,569.41 = 429,443.64 : x
  2. Step 2: Convert to fraction form
    1,388,913.21/2,083,569.41 = 429,443.64/x
  3. Step 3: Cross multiply
    1,388,913.21x = 2,083,569.41 × 429,443.64
  4. Step 4: Simplify right side
    1,388,913.21x = 894,775,632,696.66
  5. Step 5: Solve for x
    x = 894,775,632,696.66/1,388,913.21
  6. Step 6: Final answer
    x = 644,227.17

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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.