Home / 1,100,069.80-1,650,396.30-390,023.80

Finding the Fourth Proportional to 1,100,069.80, 1,650,396.30 and 390,023.80

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Solution

The fourth proportional to 1,100,069.80, 1,650,396.30 and 390,023.80 is: 585,139.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,069.80 : 1,650,396.30 = 390,023.80 : x
  2. Step 2: Convert to fraction form
    1,100,069.80/1,650,396.30 = 390,023.80/x
  3. Step 3: Cross multiply
    1,100,069.80x = 1,650,396.30 × 390,023.80
  4. Step 4: Simplify right side
    1,100,069.80x = 643,693,836,431.94
  5. Step 5: Solve for x
    x = 643,693,836,431.94/1,100,069.80
  6. Step 6: Final answer
    x = 585,139.09

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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.