Home / 685,845.64-1,028,760.78-242,509.96

Finding the Fourth Proportional to 685,845.64, 1,028,760.78 and 242,509.96

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Solution

The fourth proportional to 685,845.64, 1,028,760.78 and 242,509.96 is: 363,762.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,845.64 : 1,028,760.78 = 242,509.96 : x
  2. Step 2: Convert to fraction form
    685,845.64/1,028,760.78 = 242,509.96/x
  3. Step 3: Cross multiply
    685,845.64x = 1,028,760.78 × 242,509.96
  4. Step 4: Simplify right side
    685,845.64x = 249,484,735,607.37
  5. Step 5: Solve for x
    x = 249,484,735,607.37/685,845.64
  6. Step 6: Final answer
    x = 363,762.22

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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.