Home / 919,939.28-1,269,364.57-512,030.52

Finding the Fourth Proportional to 919,939.28, 1,269,364.57 and 512,030.52

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Solution

The fourth proportional to 919,939.28, 1,269,364.57 and 512,030.52 is: 706,517.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,939.28 : 1,269,364.57 = 512,030.52 : x
  2. Step 2: Convert to fraction form
    919,939.28/1,269,364.57 = 512,030.52/x
  3. Step 3: Cross multiply
    919,939.28x = 1,269,364.57 × 512,030.52
  4. Step 4: Simplify right side
    919,939.28x = 649,953,399,566.60
  5. Step 5: Solve for x
    x = 649,953,399,566.60/919,939.28
  6. Step 6: Final answer
    x = 706,517.72

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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.