Home / 685,394.08-1,028,385.16-264,965.20

Finding the Fourth Proportional to 685,394.08, 1,028,385.16 and 264,965.20

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Solution

The fourth proportional to 685,394.08, 1,028,385.16 and 264,965.20 is: 397,561.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,394.08 : 1,028,385.16 = 264,965.20 : x
  2. Step 2: Convert to fraction form
    685,394.08/1,028,385.16 = 264,965.20/x
  3. Step 3: Cross multiply
    685,394.08x = 1,028,385.16 × 264,965.20
  4. Step 4: Simplify right side
    685,394.08x = 272,486,279,596.43
  5. Step 5: Solve for x
    x = 272,486,279,596.43/685,394.08
  6. Step 6: Final answer
    x = 397,561.47

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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.