Home / 1,384,072.79-1,910,017.82-772,189.15

Finding the Fourth Proportional to 1,384,072.79, 1,910,017.82 and 772,189.15

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Solution

The fourth proportional to 1,384,072.79, 1,910,017.82 and 772,189.15 is: 1,065,619.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,072.79 : 1,910,017.82 = 772,189.15 : x
  2. Step 2: Convert to fraction form
    1,384,072.79/1,910,017.82 = 772,189.15/x
  3. Step 3: Cross multiply
    1,384,072.79x = 1,910,017.82 × 772,189.15
  4. Step 4: Simplify right side
    1,384,072.79x = 1,474,895,033,303.80
  5. Step 5: Solve for x
    x = 1,474,895,033,303.80/1,384,072.79
  6. Step 6: Final answer
    x = 1,065,619.55

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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.