Home / 678,055.04-936,064.32-477,745.28

Finding the Fourth Proportional to 678,055.04, 936,064.32 and 477,745.28

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Solution

The fourth proportional to 678,055.04, 936,064.32 and 477,745.28 is: 659,533.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,055.04 : 936,064.32 = 477,745.28 : x
  2. Step 2: Convert to fraction form
    678,055.04/936,064.32 = 477,745.28/x
  3. Step 3: Cross multiply
    678,055.04x = 936,064.32 × 477,745.28
  4. Step 4: Simplify right side
    678,055.04x = 447,200,310,656.41
  5. Step 5: Solve for x
    x = 447,200,310,656.41/678,055.04
  6. Step 6: Final answer
    x = 659,533.94

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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.