Home / 789,218.56-1,089,417.78-517,303.97

Finding the Fourth Proportional to 789,218.56, 1,089,417.78 and 517,303.97

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Solution

The fourth proportional to 789,218.56, 1,089,417.78 and 517,303.97 is: 714,073.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,218.56 : 1,089,417.78 = 517,303.97 : x
  2. Step 2: Convert to fraction form
    789,218.56/1,089,417.78 = 517,303.97/x
  3. Step 3: Cross multiply
    789,218.56x = 1,089,417.78 × 517,303.97
  4. Step 4: Simplify right side
    789,218.56x = 563,560,137,135.50
  5. Step 5: Solve for x
    x = 563,560,137,135.50/789,218.56
  6. Step 6: Final answer
    x = 714,073.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.