Home / 678,534.34-936,378.22-372,630.44

Finding the Fourth Proportional to 678,534.34, 936,378.22 and 372,630.44

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Solution

The fourth proportional to 678,534.34, 936,378.22 and 372,630.44 is: 514,230.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,534.34 : 936,378.22 = 372,630.44 : x
  2. Step 2: Convert to fraction form
    678,534.34/936,378.22 = 372,630.44/x
  3. Step 3: Cross multiply
    678,534.34x = 936,378.22 × 372,630.44
  4. Step 4: Simplify right side
    678,534.34x = 348,923,028,125.02
  5. Step 5: Solve for x
    x = 348,923,028,125.02/678,534.34
  6. Step 6: Final answer
    x = 514,230.46

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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.