Home / 809,987.10-1,214,980.65-778,883.10

Finding the Fourth Proportional to 809,987.10, 1,214,980.65 and 778,883.10

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Solution

The fourth proportional to 809,987.10, 1,214,980.65 and 778,883.10 is: 1,168,324.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,987.10 : 1,214,980.65 = 778,883.10 : x
  2. Step 2: Convert to fraction form
    809,987.10/1,214,980.65 = 778,883.10/x
  3. Step 3: Cross multiply
    809,987.10x = 1,214,980.65 × 778,883.10
  4. Step 4: Simplify right side
    809,987.10x = 946,327,895,112.02
  5. Step 5: Solve for x
    x = 946,327,895,112.02/809,987.10
  6. Step 6: Final answer
    x = 1,168,324.65

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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.