Home / 789,218.93-1,089,418.30-517,304.34

Finding the Fourth Proportional to 789,218.93, 1,089,418.30 and 517,304.34

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Solution

The fourth proportional to 789,218.93, 1,089,418.30 and 517,304.34 is: 714,074.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,218.93 : 1,089,418.30 = 517,304.34 : x
  2. Step 2: Convert to fraction form
    789,218.93/1,089,418.30 = 517,304.34/x
  3. Step 3: Cross multiply
    789,218.93x = 1,089,418.30 × 517,304.34
  4. Step 4: Simplify right side
    789,218.93x = 563,560,813,372.16
  5. Step 5: Solve for x
    x = 563,560,813,372.16/789,218.93
  6. Step 6: Final answer
    x = 714,074.12

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Double scale
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1.5x scale

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.