Home / 815,200.42-1,222,955.95-328,921.14

Finding the Fourth Proportional to 815,200.42, 1,222,955.95 and 328,921.14

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Solution

The fourth proportional to 815,200.42, 1,222,955.95 and 328,921.14 is: 493,444.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,200.42 : 1,222,955.95 = 328,921.14 : x
  2. Step 2: Convert to fraction form
    815,200.42/1,222,955.95 = 328,921.14/x
  3. Step 3: Cross multiply
    815,200.42x = 1,222,955.95 × 328,921.14
  4. Step 4: Simplify right side
    815,200.42x = 402,256,065,243.78
  5. Step 5: Solve for x
    x = 402,256,065,243.78/815,200.42
  6. Step 6: Final answer
    x = 493,444.38

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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.