Home / 685,486.66-1,027,946.16-258,949.72

Finding the Fourth Proportional to 685,486.66, 1,027,946.16 and 258,949.72

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Solution

The fourth proportional to 685,486.66, 1,027,946.16 and 258,949.72 is: 388,317.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,486.66 : 1,027,946.16 = 258,949.72 : x
  2. Step 2: Convert to fraction form
    685,486.66/1,027,946.16 = 258,949.72/x
  3. Step 3: Cross multiply
    685,486.66x = 1,027,946.16 × 258,949.72
  4. Step 4: Simplify right side
    685,486.66x = 266,186,370,307.08
  5. Step 5: Solve for x
    x = 266,186,370,307.08/685,486.66
  6. Step 6: Final answer
    x = 388,317.36

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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.