Home / 656,845.95-906,448.71-355,039.95

Finding the Fourth Proportional to 656,845.95, 906,448.71 and 355,039.95

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Solution

The fourth proportional to 656,845.95, 906,448.71 and 355,039.95 is: 489,955.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,845.95 : 906,448.71 = 355,039.95 : x
  2. Step 2: Convert to fraction form
    656,845.95/906,448.71 = 355,039.95/x
  3. Step 3: Cross multiply
    656,845.95x = 906,448.71 × 355,039.95
  4. Step 4: Simplify right side
    656,845.95x = 321,825,504,675.97
  5. Step 5: Solve for x
    x = 321,825,504,675.97/656,845.95
  6. Step 6: Final answer
    x = 489,955.83

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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.