Home / 1,920,126.40-2,880,189.60-1,285,604.80

Finding the Fourth Proportional to 1,920,126.40, 2,880,189.60 and 1,285,604.80

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Solution

The fourth proportional to 1,920,126.40, 2,880,189.60 and 1,285,604.80 is: 1,928,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,126.40 : 2,880,189.60 = 1,285,604.80 : x
  2. Step 2: Convert to fraction form
    1,920,126.40/2,880,189.60 = 1,285,604.80/x
  3. Step 3: Cross multiply
    1,920,126.40x = 2,880,189.60 × 1,285,604.80
  4. Step 4: Simplify right side
    1,920,126.40x = 3,702,785,574,670.08
  5. Step 5: Solve for x
    x = 3,702,785,574,670.08/1,920,126.40
  6. Step 6: Final answer
    x = 1,928,407.20

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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.