Home / 613,731.21-920,441.30-258,742.41

Finding the Fourth Proportional to 613,731.21, 920,441.30 and 258,742.41

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Solution

The fourth proportional to 613,731.21, 920,441.30 and 258,742.41 is: 388,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,731.21 : 920,441.30 = 258,742.41 : x
  2. Step 2: Convert to fraction form
    613,731.21/920,441.30 = 258,742.41/x
  3. Step 3: Cross multiply
    613,731.21x = 920,441.30 × 258,742.41
  4. Step 4: Simplify right side
    613,731.21x = 238,157,198,931.82
  5. Step 5: Solve for x
    x = 238,157,198,931.82/613,731.21
  6. Step 6: Final answer
    x = 388,048.05

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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.