Home / 656,835.22-906,432.06-355,029.22

Finding the Fourth Proportional to 656,835.22, 906,432.06 and 355,029.22

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Solution

The fourth proportional to 656,835.22, 906,432.06 and 355,029.22 is: 489,940.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,835.22 : 906,432.06 = 355,029.22 : x
  2. Step 2: Convert to fraction form
    656,835.22/906,432.06 = 355,029.22/x
  3. Step 3: Cross multiply
    656,835.22x = 906,432.06 × 355,029.22
  4. Step 4: Simplify right side
    656,835.22x = 321,809,867,244.79
  5. Step 5: Solve for x
    x = 321,809,867,244.79/656,835.22
  6. Step 6: Final answer
    x = 489,940.03

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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.