Home / 1,298,982.80-1,948,128.60-400,422.80

Finding the Fourth Proportional to 1,298,982.80, 1,948,128.60 and 400,422.80

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Solution

The fourth proportional to 1,298,982.80, 1,948,128.60 and 400,422.80 is: 600,527.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,982.80 : 1,948,128.60 = 400,422.80 : x
  2. Step 2: Convert to fraction form
    1,298,982.80/1,948,128.60 = 400,422.80/x
  3. Step 3: Cross multiply
    1,298,982.80x = 1,948,128.60 × 400,422.80
  4. Step 4: Simplify right side
    1,298,982.80x = 780,075,108,772.08
  5. Step 5: Solve for x
    x = 780,075,108,772.08/1,298,982.80
  6. Step 6: Final answer
    x = 600,527.67

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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.