Home / 685,390.40-1,028,093.28-286,091.84

Finding the Fourth Proportional to 685,390.40, 1,028,093.28 and 286,091.84

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Solution

The fourth proportional to 685,390.40, 1,028,093.28 and 286,091.84 is: 429,140.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,390.40 : 1,028,093.28 = 286,091.84 : x
  2. Step 2: Convert to fraction form
    685,390.40/1,028,093.28 = 286,091.84/x
  3. Step 3: Cross multiply
    685,390.40x = 1,028,093.28 × 286,091.84
  4. Step 4: Simplify right side
    685,390.40x = 294,129,098,166.84
  5. Step 5: Solve for x
    x = 294,129,098,166.84/685,390.40
  6. Step 6: Final answer
    x = 429,140.97

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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.