Home / 3,678,069.78-5,075,656.74-2,129,396.76

Finding the Fourth Proportional to 3,678,069.78, 5,075,656.74 and 2,129,396.76

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Solution

The fourth proportional to 3,678,069.78, 5,075,656.74 and 2,129,396.76 is: 2,938,521.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678,069.78 : 5,075,656.74 = 2,129,396.76 : x
  2. Step 2: Convert to fraction form
    3,678,069.78/5,075,656.74 = 2,129,396.76/x
  3. Step 3: Cross multiply
    3,678,069.78x = 5,075,656.74 × 2,129,396.76
  4. Step 4: Simplify right side
    3,678,069.78x = 10,808,087,017,028.16
  5. Step 5: Solve for x
    x = 10,808,087,017,028.16/3,678,069.78
  6. Step 6: Final answer
    x = 2,938,521.47

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Double scale
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1.5x scale

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.