Home / 1,388,072.49-1,915,545.15-807,434.94

Finding the Fourth Proportional to 1,388,072.49, 1,915,545.15 and 807,434.94

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Solution

The fourth proportional to 1,388,072.49, 1,915,545.15 and 807,434.94 is: 1,114,263.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,072.49 : 1,915,545.15 = 807,434.94 : x
  2. Step 2: Convert to fraction form
    1,388,072.49/1,915,545.15 = 807,434.94/x
  3. Step 3: Cross multiply
    1,388,072.49x = 1,915,545.15 × 807,434.94
  4. Step 4: Simplify right side
    1,388,072.49x = 1,546,678,083,257.54
  5. Step 5: Solve for x
    x = 1,546,678,083,257.54/1,388,072.49
  6. Step 6: Final answer
    x = 1,114,263.19

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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.