Home / 1,327,237.20-1,990,855.80-788,360.40

Finding the Fourth Proportional to 1,327,237.20, 1,990,855.80 and 788,360.40

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Solution

The fourth proportional to 1,327,237.20, 1,990,855.80 and 788,360.40 is: 1,182,540.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,237.20 : 1,990,855.80 = 788,360.40 : x
  2. Step 2: Convert to fraction form
    1,327,237.20/1,990,855.80 = 788,360.40/x
  3. Step 3: Cross multiply
    1,327,237.20x = 1,990,855.80 × 788,360.40
  4. Step 4: Simplify right side
    1,327,237.20x = 1,569,511,874,830.32
  5. Step 5: Solve for x
    x = 1,569,511,874,830.32/1,327,237.20
  6. Step 6: Final answer
    x = 1,182,540.60

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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.