Home / 683,139.15-942,815.09-396,659.30

Finding the Fourth Proportional to 683,139.15, 942,815.09 and 396,659.30

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Solution

The fourth proportional to 683,139.15, 942,815.09 and 396,659.30 is: 547,438.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,139.15 : 942,815.09 = 396,659.30 : x
  2. Step 2: Convert to fraction form
    683,139.15/942,815.09 = 396,659.30/x
  3. Step 3: Cross multiply
    683,139.15x = 942,815.09 × 396,659.30
  4. Step 4: Simplify right side
    683,139.15x = 373,976,369,906.41
  5. Step 5: Solve for x
    x = 373,976,369,906.41/683,139.15
  6. Step 6: Final answer
    x = 547,438.06

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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.