Home / 719,172.80-1,079,373.60-320,427.20

Finding the Fourth Proportional to 719,172.80, 1,079,373.60 and 320,427.20

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Solution

The fourth proportional to 719,172.80, 1,079,373.60 and 320,427.20 is: 480,914.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,172.80 : 1,079,373.60 = 320,427.20 : x
  2. Step 2: Convert to fraction form
    719,172.80/1,079,373.60 = 320,427.20/x
  3. Step 3: Cross multiply
    719,172.80x = 1,079,373.60 × 320,427.20
  4. Step 4: Simplify right side
    719,172.80x = 345,860,660,401.92
  5. Step 5: Solve for x
    x = 345,860,660,401.92/719,172.80
  6. Step 6: Final answer
    x = 480,914.55

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1.5x scale

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.