Home / 815,555.51-1,223,333.27-254,638.07

Finding the Fourth Proportional to 815,555.51, 1,223,333.27 and 254,638.07

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Solution

The fourth proportional to 815,555.51, 1,223,333.27 and 254,638.07 is: 381,957.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,555.51 : 1,223,333.27 = 254,638.07 : x
  2. Step 2: Convert to fraction form
    815,555.51/1,223,333.27 = 254,638.07/x
  3. Step 3: Cross multiply
    815,555.51x = 1,223,333.27 × 254,638.07
  4. Step 4: Simplify right side
    815,555.51x = 311,507,221,566.40
  5. Step 5: Solve for x
    x = 311,507,221,566.40/815,555.51
  6. Step 6: Final answer
    x = 381,957.11

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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.