Home / 903,500.80-1,356,806.40-639,116.80

Finding the Fourth Proportional to 903,500.80, 1,356,806.40 and 639,116.80

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Solution

The fourth proportional to 903,500.80, 1,356,806.40 and 639,116.80 is: 959,775.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,500.80 : 1,356,806.40 = 639,116.80 : x
  2. Step 2: Convert to fraction form
    903,500.80/1,356,806.40 = 639,116.80/x
  3. Step 3: Cross multiply
    903,500.80x = 1,356,806.40 × 639,116.80
  4. Step 4: Simplify right side
    903,500.80x = 867,157,764,587.52
  5. Step 5: Solve for x
    x = 867,157,764,587.52/903,500.80
  6. Step 6: Final answer
    x = 959,775.31

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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.