Home / 1,288,380-1,932,912.72-446,930.40

Finding the Fourth Proportional to 1,288,380, 1,932,912.72 and 446,930.40

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Solution

The fourth proportional to 1,288,380, 1,932,912.72 and 446,930.40 is: 670,514.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,380 : 1,932,912.72 = 446,930.40 : x
  2. Step 2: Convert to fraction form
    1,288,380/1,932,912.72 = 446,930.40/x
  3. Step 3: Cross multiply
    1,288,380x = 1,932,912.72 × 446,930.40
  4. Step 4: Simplify right side
    1,288,380x = 863,877,455,114.69
  5. Step 5: Solve for x
    x = 863,877,455,114.69/1,288,380
  6. Step 6: Final answer
    x = 670,514.49

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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.