Home / 1,281,069.87-1,921,804.06-427,877.43

Finding the Fourth Proportional to 1,281,069.87, 1,921,804.06 and 427,877.43

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Solution

The fourth proportional to 1,281,069.87, 1,921,804.06 and 427,877.43 is: 641,882.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,069.87 : 1,921,804.06 = 427,877.43 : x
  2. Step 2: Convert to fraction form
    1,281,069.87/1,921,804.06 = 427,877.43/x
  3. Step 3: Cross multiply
    1,281,069.87x = 1,921,804.06 × 427,877.43
  4. Step 4: Simplify right side
    1,281,069.87x = 822,296,582,156.37
  5. Step 5: Solve for x
    x = 822,296,582,156.37/1,281,069.87
  6. Step 6: Final answer
    x = 641,882.70

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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.