Home / 743,146.65-1,025,566.38-420,849.81

Finding the Fourth Proportional to 743,146.65, 1,025,566.38 and 420,849.81

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Solution

The fourth proportional to 743,146.65, 1,025,566.38 and 420,849.81 is: 580,786.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,146.65 : 1,025,566.38 = 420,849.81 : x
  2. Step 2: Convert to fraction form
    743,146.65/1,025,566.38 = 420,849.81/x
  3. Step 3: Cross multiply
    743,146.65x = 1,025,566.38 × 420,849.81
  4. Step 4: Simplify right side
    743,146.65x = 431,609,416,165.39
  5. Step 5: Solve for x
    x = 431,609,416,165.39/743,146.65
  6. Step 6: Final answer
    x = 580,786.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.