Home / 1,919,431.96-2,879,139.74-781,940.46

Finding the Fourth Proportional to 1,919,431.96, 2,879,139.74 and 781,940.46

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Solution

The fourth proportional to 1,919,431.96, 2,879,139.74 and 781,940.46 is: 1,172,907.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,431.96 : 2,879,139.74 = 781,940.46 : x
  2. Step 2: Convert to fraction form
    1,919,431.96/2,879,139.74 = 781,940.46/x
  3. Step 3: Cross multiply
    1,919,431.96x = 2,879,139.74 × 781,940.46
  4. Step 4: Simplify right side
    1,919,431.96x = 2,251,315,852,699.88
  5. Step 5: Solve for x
    x = 2,251,315,852,699.88/1,919,431.96
  6. Step 6: Final answer
    x = 1,172,907.35

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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.