Home / 878,431.95-1,212,185.76-485,941.46

Finding the Fourth Proportional to 878,431.95, 1,212,185.76 and 485,941.46

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Solution

The fourth proportional to 878,431.95, 1,212,185.76 and 485,941.46 is: 670,571.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,431.95 : 1,212,185.76 = 485,941.46 : x
  2. Step 2: Convert to fraction form
    878,431.95/1,212,185.76 = 485,941.46/x
  3. Step 3: Cross multiply
    878,431.95x = 1,212,185.76 × 485,941.46
  4. Step 4: Simplify right side
    878,431.95x = 589,051,311,944.68
  5. Step 5: Solve for x
    x = 589,051,311,944.68/878,431.95
  6. Step 6: Final answer
    x = 670,571.37

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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.