Home / 685,812.30-1,028,553-286,236.47

Finding the Fourth Proportional to 685,812.30, 1,028,553 and 286,236.47

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Solution

The fourth proportional to 685,812.30, 1,028,553 and 286,236.47 is: 429,285.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,812.30 : 1,028,553 = 286,236.47 : x
  2. Step 2: Convert to fraction form
    685,812.30/1,028,553 = 286,236.47/x
  3. Step 3: Cross multiply
    685,812.30x = 1,028,553 × 286,236.47
  4. Step 4: Simplify right side
    685,812.30x = 294,409,374,785.15
  5. Step 5: Solve for x
    x = 294,409,374,785.15/685,812.30
  6. Step 6: Final answer
    x = 429,285.64

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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.