Home / 1,382,789.76-1,908,181.44-779,216.64

Finding the Fourth Proportional to 1,382,789.76, 1,908,181.44 and 779,216.64

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Solution

The fourth proportional to 1,382,789.76, 1,908,181.44 and 779,216.64 is: 1,075,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,789.76 : 1,908,181.44 = 779,216.64 : x
  2. Step 2: Convert to fraction form
    1,382,789.76/1,908,181.44 = 779,216.64/x
  3. Step 3: Cross multiply
    1,382,789.76x = 1,908,181.44 × 779,216.64
  4. Step 4: Simplify right side
    1,382,789.76x = 1,486,886,730,187.16
  5. Step 5: Solve for x
    x = 1,486,886,730,187.16/1,382,789.76
  6. Step 6: Final answer
    x = 1,075,280.40

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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.