Home / 1,272,886.40-1,909,286.40-326,266.40

Finding the Fourth Proportional to 1,272,886.40, 1,909,286.40 and 326,266.40

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Solution

The fourth proportional to 1,272,886.40, 1,909,286.40 and 326,266.40 is: 489,388.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,886.40 : 1,909,286.40 = 326,266.40 : x
  2. Step 2: Convert to fraction form
    1,272,886.40/1,909,286.40 = 326,266.40/x
  3. Step 3: Cross multiply
    1,272,886.40x = 1,909,286.40 × 326,266.40
  4. Step 4: Simplify right side
    1,272,886.40x = 622,936,000,296.96
  5. Step 5: Solve for x
    x = 622,936,000,296.96/1,272,886.40
  6. Step 6: Final answer
    x = 489,388.53

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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.