Home / 709,485.58-979,112.87-403,554.07

Finding the Fourth Proportional to 709,485.58, 979,112.87 and 403,554.07

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Solution

The fourth proportional to 709,485.58, 979,112.87 and 403,554.07 is: 556,917.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,485.58 : 979,112.87 = 403,554.07 : x
  2. Step 2: Convert to fraction form
    709,485.58/979,112.87 = 403,554.07/x
  3. Step 3: Cross multiply
    709,485.58x = 979,112.87 × 403,554.07
  4. Step 4: Simplify right side
    709,485.58x = 395,124,981,660.11
  5. Step 5: Solve for x
    x = 395,124,981,660.11/709,485.58
  6. Step 6: Final answer
    x = 556,917.57

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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.