Home / 719,417.70-1,079,515.35-320,120.10

Finding the Fourth Proportional to 719,417.70, 1,079,515.35 and 320,120.10

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Solution

The fourth proportional to 719,417.70, 1,079,515.35 and 320,120.10 is: 480,353.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,417.70 : 1,079,515.35 = 320,120.10 : x
  2. Step 2: Convert to fraction form
    719,417.70/1,079,515.35 = 320,120.10/x
  3. Step 3: Cross multiply
    719,417.70x = 1,079,515.35 × 320,120.10
  4. Step 4: Simplify right side
    719,417.70x = 345,574,561,793.54
  5. Step 5: Solve for x
    x = 345,574,561,793.54/719,417.70
  6. Step 6: Final answer
    x = 480,353.15

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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.