Home / 1,920,899.40-2,879,346.78-721,995.72

Finding the Fourth Proportional to 1,920,899.40, 2,879,346.78 and 721,995.72

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Solution

The fourth proportional to 1,920,899.40, 2,879,346.78 and 721,995.72 is: 1,082,240.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,899.40 : 2,879,346.78 = 721,995.72 : x
  2. Step 2: Convert to fraction form
    1,920,899.40/2,879,346.78 = 721,995.72/x
  3. Step 3: Cross multiply
    1,920,899.40x = 2,879,346.78 × 721,995.72
  4. Step 4: Simplify right side
    1,920,899.40x = 2,078,876,051,555.78
  5. Step 5: Solve for x
    x = 2,078,876,051,555.78/1,920,899.40
  6. Step 6: Final answer
    x = 1,082,240.98

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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.