Home / 862,660.44-1,190,455.46-470,196.78

Finding the Fourth Proportional to 862,660.44, 1,190,455.46 and 470,196.78

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Solution

The fourth proportional to 862,660.44, 1,190,455.46 and 470,196.78 is: 648,862.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,660.44 : 1,190,455.46 = 470,196.78 : x
  2. Step 2: Convert to fraction form
    862,660.44/1,190,455.46 = 470,196.78/x
  3. Step 3: Cross multiply
    862,660.44x = 1,190,455.46 × 470,196.78
  4. Step 4: Simplify right side
    862,660.44x = 559,748,315,722.16
  5. Step 5: Solve for x
    x = 559,748,315,722.16/862,660.44
  6. Step 6: Final answer
    x = 648,862.86

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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.