Home / 685,130.07-1,027,228.01-347,519.72

Finding the Fourth Proportional to 685,130.07, 1,027,228.01 and 347,519.72

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Solution

The fourth proportional to 685,130.07, 1,027,228.01 and 347,519.72 is: 521,042.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,130.07 : 1,027,228.01 = 347,519.72 : x
  2. Step 2: Convert to fraction form
    685,130.07/1,027,228.01 = 347,519.72/x
  3. Step 3: Cross multiply
    685,130.07x = 1,027,228.01 × 347,519.72
  4. Step 4: Simplify right side
    685,130.07x = 356,981,990,307.55
  5. Step 5: Solve for x
    x = 356,981,990,307.55/685,130.07
  6. Step 6: Final answer
    x = 521,042.65

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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.