Home / 1,298,998.80-1,948,152.60-400,438.80

Finding the Fourth Proportional to 1,298,998.80, 1,948,152.60 and 400,438.80

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Solution

The fourth proportional to 1,298,998.80, 1,948,152.60 and 400,438.80 is: 600,551.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,998.80 : 1,948,152.60 = 400,438.80 : x
  2. Step 2: Convert to fraction form
    1,298,998.80/1,948,152.60 = 400,438.80/x
  3. Step 3: Cross multiply
    1,298,998.80x = 1,948,152.60 × 400,438.80
  4. Step 4: Simplify right side
    1,298,998.80x = 780,115,889,360.88
  5. Step 5: Solve for x
    x = 780,115,889,360.88/1,298,998.80
  6. Step 6: Final answer
    x = 600,551.66

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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.