Home / 919,939.90-1,269,365.43-512,031.15

Finding the Fourth Proportional to 919,939.90, 1,269,365.43 and 512,031.15

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Solution

The fourth proportional to 919,939.90, 1,269,365.43 and 512,031.15 is: 706,518.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,939.90 : 1,269,365.43 = 512,031.15 : x
  2. Step 2: Convert to fraction form
    919,939.90/1,269,365.43 = 512,031.15/x
  3. Step 3: Cross multiply
    919,939.90x = 1,269,365.43 × 512,031.15
  4. Step 4: Simplify right side
    919,939.90x = 649,954,634,546.32
  5. Step 5: Solve for x
    x = 649,954,634,546.32/919,939.90
  6. Step 6: Final answer
    x = 706,518.58

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1.5x scale

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.