Home / 1,388,278.02-1,915,965-844,451.31

Finding the Fourth Proportional to 1,388,278.02, 1,915,965 and 844,451.31

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Solution

The fourth proportional to 1,388,278.02, 1,915,965 and 844,451.31 is: 1,165,428.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,278.02 : 1,915,965 = 844,451.31 : x
  2. Step 2: Convert to fraction form
    1,388,278.02/1,915,965 = 844,451.31/x
  3. Step 3: Cross multiply
    1,388,278.02x = 1,915,965 × 844,451.31
  4. Step 4: Simplify right side
    1,388,278.02x = 1,617,939,154,164.15
  5. Step 5: Solve for x
    x = 1,617,939,154,164.15/1,388,278.02
  6. Step 6: Final answer
    x = 1,165,428.78

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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.