Home / 1,920,185.65-2,880,679.43-640,742.05

Finding the Fourth Proportional to 1,920,185.65, 2,880,679.43 and 640,742.05

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Solution

The fourth proportional to 1,920,185.65, 2,880,679.43 and 640,742.05 is: 961,246.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,185.65 : 2,880,679.43 = 640,742.05 : x
  2. Step 2: Convert to fraction form
    1,920,185.65/2,880,679.43 = 640,742.05/x
  3. Step 3: Cross multiply
    1,920,185.65x = 2,880,679.43 × 640,742.05
  4. Step 4: Simplify right side
    1,920,185.65x = 1,845,772,443,371.03
  5. Step 5: Solve for x
    x = 1,845,772,443,371.03/1,920,185.65
  6. Step 6: Final answer
    x = 961,246.87

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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.