Home / 685,389.02-1,028,313.16-236,419.80

Finding the Fourth Proportional to 685,389.02, 1,028,313.16 and 236,419.80

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Solution

The fourth proportional to 685,389.02, 1,028,313.16 and 236,419.80 is: 354,708.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,389.02 : 1,028,313.16 = 236,419.80 : x
  2. Step 2: Convert to fraction form
    685,389.02/1,028,313.16 = 236,419.80/x
  3. Step 3: Cross multiply
    685,389.02x = 1,028,313.16 × 236,419.80
  4. Step 4: Simplify right side
    685,389.02x = 243,113,591,624.57
  5. Step 5: Solve for x
    x = 243,113,591,624.57/685,389.02
  6. Step 6: Final answer
    x = 354,708.91

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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.