Home / 919,811.50-1,269,339.85-512,009.67

Finding the Fourth Proportional to 919,811.50, 1,269,339.85 and 512,009.67

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Solution

The fourth proportional to 919,811.50, 1,269,339.85 and 512,009.67 is: 706,573.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,811.50 : 1,269,339.85 = 512,009.67 : x
  2. Step 2: Convert to fraction form
    919,811.50/1,269,339.85 = 512,009.67/x
  3. Step 3: Cross multiply
    919,811.50x = 1,269,339.85 × 512,009.67
  4. Step 4: Simplify right side
    919,811.50x = 649,914,283,116.39
  5. Step 5: Solve for x
    x = 649,914,283,116.39/919,811.50
  6. Step 6: Final answer
    x = 706,573.34

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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.