Home / 1,382,791.76-1,908,184.20-779,218.64

Finding the Fourth Proportional to 1,382,791.76, 1,908,184.20 and 779,218.64

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Solution

The fourth proportional to 1,382,791.76, 1,908,184.20 and 779,218.64 is: 1,075,283.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,791.76 : 1,908,184.20 = 779,218.64 : x
  2. Step 2: Convert to fraction form
    1,382,791.76/1,908,184.20 = 779,218.64/x
  3. Step 3: Cross multiply
    1,382,791.76x = 1,908,184.20 × 779,218.64
  4. Step 4: Simplify right side
    1,382,791.76x = 1,486,892,697,193.49
  5. Step 5: Solve for x
    x = 1,486,892,697,193.49/1,382,791.76
  6. Step 6: Final answer
    x = 1,075,283.16

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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.