Home / 685,727.24-1,028,755.09-286,145.74

Finding the Fourth Proportional to 685,727.24, 1,028,755.09 and 286,145.74

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Solution

The fourth proportional to 685,727.24, 1,028,755.09 and 286,145.74 is: 429,287.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,727.24 : 1,028,755.09 = 286,145.74 : x
  2. Step 2: Convert to fraction form
    685,727.24/1,028,755.09 = 286,145.74/x
  3. Step 3: Cross multiply
    685,727.24x = 1,028,755.09 × 286,145.74
  4. Step 4: Simplify right side
    685,727.24x = 294,373,881,363.04
  5. Step 5: Solve for x
    x = 294,373,881,363.04/685,727.24
  6. Step 6: Final answer
    x = 429,287.13

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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.