Home / 900,919.46-1,243,268.88-493,021.28

Finding the Fourth Proportional to 900,919.46, 1,243,268.88 and 493,021.28

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Solution

The fourth proportional to 900,919.46, 1,243,268.88 and 493,021.28 is: 680,369.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,919.46 : 1,243,268.88 = 493,021.28 : x
  2. Step 2: Convert to fraction form
    900,919.46/1,243,268.88 = 493,021.28/x
  3. Step 3: Cross multiply
    900,919.46x = 1,243,268.88 × 493,021.28
  4. Step 4: Simplify right side
    900,919.46x = 612,958,014,601.77
  5. Step 5: Solve for x
    x = 612,958,014,601.77/900,919.46
  6. Step 6: Final answer
    x = 680,369.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.