Home / 719,406.78-1,079,109.45-213,965.70

Finding the Fourth Proportional to 719,406.78, 1,079,109.45 and 213,965.70

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Solution

The fourth proportional to 719,406.78, 1,079,109.45 and 213,965.70 is: 320,948.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,406.78 : 1,079,109.45 = 213,965.70 : x
  2. Step 2: Convert to fraction form
    719,406.78/1,079,109.45 = 213,965.70/x
  3. Step 3: Cross multiply
    719,406.78x = 1,079,109.45 × 213,965.70
  4. Step 4: Simplify right side
    719,406.78x = 230,892,408,845.87
  5. Step 5: Solve for x
    x = 230,892,408,845.87/719,406.78
  6. Step 6: Final answer
    x = 320,948.34

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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.