Home / 827,445.40-1,240,993.84-378,038.68

Finding the Fourth Proportional to 827,445.40, 1,240,993.84 and 378,038.68

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Solution

The fourth proportional to 827,445.40, 1,240,993.84 and 378,038.68 is: 566,978.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,445.40 : 1,240,993.84 = 378,038.68 : x
  2. Step 2: Convert to fraction form
    827,445.40/1,240,993.84 = 378,038.68/x
  3. Step 3: Cross multiply
    827,445.40x = 1,240,993.84 × 378,038.68
  4. Step 4: Simplify right side
    827,445.40x = 469,143,673,161.73
  5. Step 5: Solve for x
    x = 469,143,673,161.73/827,445.40
  6. Step 6: Final answer
    x = 566,978.41

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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.