Home / 1,991,806.60-2,988,681.90-926,300.20

Finding the Fourth Proportional to 1,991,806.60, 2,988,681.90 and 926,300.20

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Solution

The fourth proportional to 1,991,806.60, 2,988,681.90 and 926,300.20 is: 1,389,902.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,806.60 : 2,988,681.90 = 926,300.20 : x
  2. Step 2: Convert to fraction form
    1,991,806.60/2,988,681.90 = 926,300.20/x
  3. Step 3: Cross multiply
    1,991,806.60x = 2,988,681.90 × 926,300.20
  4. Step 4: Simplify right side
    1,991,806.60x = 2,768,416,641,706.38
  5. Step 5: Solve for x
    x = 2,768,416,641,706.38/1,991,806.60
  6. Step 6: Final answer
    x = 1,389,902.33

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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.