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Finding the Fourth Proportional to 490,999.93, 677,672.91 and 307,323.67

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Solution

The fourth proportional to 490,999.93, 677,672.91 and 307,323.67 is: 424,164.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,999.93 : 677,672.91 = 307,323.67 : x
  2. Step 2: Convert to fraction form
    490,999.93/677,672.91 = 307,323.67/x
  3. Step 3: Cross multiply
    490,999.93x = 677,672.91 × 307,323.67
  4. Step 4: Simplify right side
    490,999.93x = 208,264,925,760.78
  5. Step 5: Solve for x
    x = 208,264,925,760.78/490,999.93
  6. Step 6: Final answer
    x = 424,164.88

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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.