Home / 1,286,089.88-1,929,135.65-326,617.44

Finding the Fourth Proportional to 1,286,089.88, 1,929,135.65 and 326,617.44

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Solution

The fourth proportional to 1,286,089.88, 1,929,135.65 and 326,617.44 is: 489,926.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,089.88 : 1,929,135.65 = 326,617.44 : x
  2. Step 2: Convert to fraction form
    1,286,089.88/1,929,135.65 = 326,617.44/x
  3. Step 3: Cross multiply
    1,286,089.88x = 1,929,135.65 × 326,617.44
  4. Step 4: Simplify right side
    1,286,089.88x = 630,089,347,415.74
  5. Step 5: Solve for x
    x = 630,089,347,415.74/1,286,089.88
  6. Step 6: Final answer
    x = 489,926.37

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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.