Home / 685,747.66-1,028,785.66-286,166.12

Finding the Fourth Proportional to 685,747.66, 1,028,785.66 and 286,166.12

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Solution

The fourth proportional to 685,747.66, 1,028,785.66 and 286,166.12 is: 429,317.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,747.66 : 1,028,785.66 = 286,166.12 : x
  2. Step 2: Convert to fraction form
    685,747.66/1,028,785.66 = 286,166.12/x
  3. Step 3: Cross multiply
    685,747.66x = 1,028,785.66 × 286,166.12
  4. Step 4: Simplify right side
    685,747.66x = 294,403,600,633.84
  5. Step 5: Solve for x
    x = 294,403,600,633.84/685,747.66
  6. Step 6: Final answer
    x = 429,317.69

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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.