Home / 686,383.32-1,028,962.62-349,235.40

Finding the Fourth Proportional to 686,383.32, 1,028,962.62 and 349,235.40

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Solution

The fourth proportional to 686,383.32, 1,028,962.62 and 349,235.40 is: 523,541.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,383.32 : 1,028,962.62 = 349,235.40 : x
  2. Step 2: Convert to fraction form
    686,383.32/1,028,962.62 = 349,235.40/x
  3. Step 3: Cross multiply
    686,383.32x = 1,028,962.62 × 349,235.40
  4. Step 4: Simplify right side
    686,383.32x = 359,350,172,180.75
  5. Step 5: Solve for x
    x = 359,350,172,180.75/686,383.32
  6. Step 6: Final answer
    x = 523,541.53

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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.