Home / 628,936.32-867,919.68-342,459.84

Finding the Fourth Proportional to 628,936.32, 867,919.68 and 342,459.84

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Solution

The fourth proportional to 628,936.32, 867,919.68 and 342,459.84 is: 472,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,936.32 : 867,919.68 = 342,459.84 : x
  2. Step 2: Convert to fraction form
    628,936.32/867,919.68 = 342,459.84/x
  3. Step 3: Cross multiply
    628,936.32x = 867,919.68 × 342,459.84
  4. Step 4: Simplify right side
    628,936.32x = 297,227,634,745.65
  5. Step 5: Solve for x
    x = 297,227,634,745.65/628,936.32
  6. Step 6: Final answer
    x = 472,587.80

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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.