Home / 719,313.60-1,077,415.20-640,516.80

Finding the Fourth Proportional to 719,313.60, 1,077,415.20 and 640,516.80

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Solution

The fourth proportional to 719,313.60, 1,077,415.20 and 640,516.80 is: 959,390.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,313.60 : 1,077,415.20 = 640,516.80 : x
  2. Step 2: Convert to fraction form
    719,313.60/1,077,415.20 = 640,516.80/x
  3. Step 3: Cross multiply
    719,313.60x = 1,077,415.20 × 640,516.80
  4. Step 4: Simplify right side
    719,313.60x = 690,102,536,175.36
  5. Step 5: Solve for x
    x = 690,102,536,175.36/719,313.60
  6. Step 6: Final answer
    x = 959,390.36

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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.