Home / 1,317,271.50-1,975,912.11-319,999.50

Finding the Fourth Proportional to 1,317,271.50, 1,975,912.11 and 319,999.50

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Solution

The fourth proportional to 1,317,271.50, 1,975,912.11 and 319,999.50 is: 480,000.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,271.50 : 1,975,912.11 = 319,999.50 : x
  2. Step 2: Convert to fraction form
    1,317,271.50/1,975,912.11 = 319,999.50/x
  3. Step 3: Cross multiply
    1,317,271.50x = 1,975,912.11 × 319,999.50
  4. Step 4: Simplify right side
    1,317,271.50x = 632,290,887,243.95
  5. Step 5: Solve for x
    x = 632,290,887,243.95/1,317,271.50
  6. Step 6: Final answer
    x = 480,000.43

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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.