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Finding the Fourth Proportional to 2,775,985.40, 4,163,978.10 and 882,918.20

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Solution

The fourth proportional to 2,775,985.40, 4,163,978.10 and 882,918.20 is: 1,324,377.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775,985.40 : 4,163,978.10 = 882,918.20 : x
  2. Step 2: Convert to fraction form
    2,775,985.40/4,163,978.10 = 882,918.20/x
  3. Step 3: Cross multiply
    2,775,985.40x = 4,163,978.10 × 882,918.20
  4. Step 4: Simplify right side
    2,775,985.40x = 3,676,452,048,891.42
  5. Step 5: Solve for x
    x = 3,676,452,048,891.42/2,775,985.40
  6. Step 6: Final answer
    x = 1,324,377.30

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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.