Home / 678,905.12-936,918.72-377,099.12

Finding the Fourth Proportional to 678,905.12, 936,918.72 and 377,099.12

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Solution

The fourth proportional to 678,905.12, 936,918.72 and 377,099.12 is: 520,413.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,905.12 : 936,918.72 = 377,099.12 : x
  2. Step 2: Convert to fraction form
    678,905.12/936,918.72 = 377,099.12/x
  3. Step 3: Cross multiply
    678,905.12x = 936,918.72 × 377,099.12
  4. Step 4: Simplify right side
    678,905.12x = 353,311,224,823.53
  5. Step 5: Solve for x
    x = 353,311,224,823.53/678,905.12
  6. Step 6: Final answer
    x = 520,413.26

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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.