Home / 1,100,091.80-1,650,429.30-390,045.80

Finding the Fourth Proportional to 1,100,091.80, 1,650,429.30 and 390,045.80

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Solution

The fourth proportional to 1,100,091.80, 1,650,429.30 and 390,045.80 is: 585,172.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,091.80 : 1,650,429.30 = 390,045.80 : x
  2. Step 2: Convert to fraction form
    1,100,091.80/1,650,429.30 = 390,045.80/x
  3. Step 3: Cross multiply
    1,100,091.80x = 1,650,429.30 × 390,045.80
  4. Step 4: Simplify right side
    1,100,091.80x = 643,743,016,661.94
  5. Step 5: Solve for x
    x = 643,743,016,661.94/1,100,091.80
  6. Step 6: Final answer
    x = 585,172.09

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Double scale
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Similar ratio
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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.