Home / 3,100,078.20-4,650,246.90-1,660,157.40

Finding the Fourth Proportional to 3,100,078.20, 4,650,246.90 and 1,660,157.40

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Solution

The fourth proportional to 3,100,078.20, 4,650,246.90 and 1,660,157.40 is: 2,490,305.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100,078.20 : 4,650,246.90 = 1,660,157.40 : x
  2. Step 2: Convert to fraction form
    3,100,078.20/4,650,246.90 = 1,660,157.40/x
  3. Step 3: Cross multiply
    3,100,078.20x = 4,650,246.90 × 1,660,157.40
  4. Step 4: Simplify right side
    3,100,078.20x = 7,720,141,802,862.06
  5. Step 5: Solve for x
    x = 7,720,141,802,862.06/3,100,078.20
  6. Step 6: Final answer
    x = 2,490,305.50

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1.5x scale

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.