Home / 1,388,775.58-1,915,738.70-807,933.49

Finding the Fourth Proportional to 1,388,775.58, 1,915,738.70 and 807,933.49

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Solution

The fourth proportional to 1,388,775.58, 1,915,738.70 and 807,933.49 is: 1,114,499.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,775.58 : 1,915,738.70 = 807,933.49 : x
  2. Step 2: Convert to fraction form
    1,388,775.58/1,915,738.70 = 807,933.49/x
  3. Step 3: Cross multiply
    1,388,775.58x = 1,915,738.70 × 807,933.49
  4. Step 4: Simplify right side
    1,388,775.58x = 1,547,789,444,990.05
  5. Step 5: Solve for x
    x = 1,547,789,444,990.05/1,388,775.58
  6. Step 6: Final answer
    x = 1,114,499.33

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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.