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Finding the Fourth Proportional to 1,926,692.10, 2,887,964.55 and 728,151.30

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Solution

The fourth proportional to 1,926,692.10, 2,887,964.55 and 728,151.30 is: 1,091,443.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926,692.10 : 2,887,964.55 = 728,151.30 : x
  2. Step 2: Convert to fraction form
    1,926,692.10/2,887,964.55 = 728,151.30/x
  3. Step 3: Cross multiply
    1,926,692.10x = 2,887,964.55 × 728,151.30
  4. Step 4: Simplify right side
    1,926,692.10x = 2,102,875,141,436.42
  5. Step 5: Solve for x
    x = 2,102,875,141,436.42/1,926,692.10
  6. Step 6: Final answer
    x = 1,091,443.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.