Home / 685,867.04-1,028,800.67-286,289.84

Finding the Fourth Proportional to 685,867.04, 1,028,800.67 and 286,289.84

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Solution

The fourth proportional to 685,867.04, 1,028,800.67 and 286,289.84 is: 429,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,867.04 : 1,028,800.67 = 286,289.84 : x
  2. Step 2: Convert to fraction form
    685,867.04/1,028,800.67 = 286,289.84/x
  3. Step 3: Cross multiply
    685,867.04x = 1,028,800.67 × 286,289.84
  4. Step 4: Simplify right side
    685,867.04x = 294,535,178,635.92
  5. Step 5: Solve for x
    x = 294,535,178,635.92/685,867.04
  6. Step 6: Final answer
    x = 429,434.81

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1.5x scale

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.