Home / 921,399.98-1,382,169.94-313,999.52

Finding the Fourth Proportional to 921,399.98, 1,382,169.94 and 313,999.52

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Solution

The fourth proportional to 921,399.98, 1,382,169.94 and 313,999.52 is: 471,023.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,399.98 : 1,382,169.94 = 313,999.52 : x
  2. Step 2: Convert to fraction form
    921,399.98/1,382,169.94 = 313,999.52/x
  3. Step 3: Cross multiply
    921,399.98x = 1,382,169.94 × 313,999.52
  4. Step 4: Simplify right side
    921,399.98x = 434,000,697,718.43
  5. Step 5: Solve for x
    x = 434,000,697,718.43/921,399.98
  6. Step 6: Final answer
    x = 471,023.12

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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.