Home / 815,477.88-1,223,121.69-216,485.58

Finding the Fourth Proportional to 815,477.88, 1,223,121.69 and 216,485.58

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Solution

The fourth proportional to 815,477.88, 1,223,121.69 and 216,485.58 is: 324,703.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,477.88 : 1,223,121.69 = 216,485.58 : x
  2. Step 2: Convert to fraction form
    815,477.88/1,223,121.69 = 216,485.58/x
  3. Step 3: Cross multiply
    815,477.88x = 1,223,121.69 × 216,485.58
  4. Step 4: Simplify right side
    815,477.88x = 264,788,208,470.23
  5. Step 5: Solve for x
    x = 264,788,208,470.23/815,477.88
  6. Step 6: Final answer
    x = 324,703.12

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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.