Home / 1,298,840.80-1,948,568.40-412,376.80

Finding the Fourth Proportional to 1,298,840.80, 1,948,568.40 and 412,376.80

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Solution

The fourth proportional to 1,298,840.80, 1,948,568.40 and 412,376.80 is: 618,662.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,840.80 : 1,948,568.40 = 412,376.80 : x
  2. Step 2: Convert to fraction form
    1,298,840.80/1,948,568.40 = 412,376.80/x
  3. Step 3: Cross multiply
    1,298,840.80x = 1,948,568.40 × 412,376.80
  4. Step 4: Simplify right side
    1,298,840.80x = 803,544,401,373.12
  5. Step 5: Solve for x
    x = 803,544,401,373.12/1,298,840.80
  6. Step 6: Final answer
    x = 618,662.73

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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.