Home / 656,928.55-906,558.93-355,122.55

Finding the Fourth Proportional to 656,928.55, 906,558.93 and 355,122.55

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Solution

The fourth proportional to 656,928.55, 906,558.93 and 355,122.55 is: 490,067.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,928.55 : 906,558.93 = 355,122.55 : x
  2. Step 2: Convert to fraction form
    656,928.55/906,558.93 = 355,122.55/x
  3. Step 3: Cross multiply
    656,928.55x = 906,558.93 × 355,122.55
  4. Step 4: Simplify right side
    656,928.55x = 321,939,518,946.87
  5. Step 5: Solve for x
    x = 321,939,518,946.87/656,928.55
  6. Step 6: Final answer
    x = 490,067.78

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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.