Home / 905,447.45-1,357,326.95-305,989.40

Finding the Fourth Proportional to 905,447.45, 1,357,326.95 and 305,989.40

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Solution

The fourth proportional to 905,447.45, 1,357,326.95 and 305,989.40 is: 458,698.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,447.45 : 1,357,326.95 = 305,989.40 : x
  2. Step 2: Convert to fraction form
    905,447.45/1,357,326.95 = 305,989.40/x
  3. Step 3: Cross multiply
    905,447.45x = 1,357,326.95 × 305,989.40
  4. Step 4: Simplify right side
    905,447.45x = 415,327,650,717.75
  5. Step 5: Solve for x
    x = 415,327,650,717.75/905,447.45
  6. Step 6: Final answer
    x = 458,698.79

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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.