Home / 1,920,071.40-2,880,107.10-1,838,164.20

Finding the Fourth Proportional to 1,920,071.40, 2,880,107.10 and 1,838,164.20

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Solution

The fourth proportional to 1,920,071.40, 2,880,107.10 and 1,838,164.20 is: 2,757,246.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,071.40 : 2,880,107.10 = 1,838,164.20 : x
  2. Step 2: Convert to fraction form
    1,920,071.40/2,880,107.10 = 1,838,164.20/x
  3. Step 3: Cross multiply
    1,920,071.40x = 2,880,107.10 × 1,838,164.20
  4. Step 4: Simplify right side
    1,920,071.40x = 5,294,109,763,385.82
  5. Step 5: Solve for x
    x = 5,294,109,763,385.82/1,920,071.40
  6. Step 6: Final answer
    x = 2,757,246.30

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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.