Home / 743,479.86-1,025,968.77-421,183.38

Finding the Fourth Proportional to 743,479.86, 1,025,968.77 and 421,183.38

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Solution

The fourth proportional to 743,479.86, 1,025,968.77 and 421,183.38 is: 581,214.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,479.86 : 1,025,968.77 = 421,183.38 : x
  2. Step 2: Convert to fraction form
    743,479.86/1,025,968.77 = 421,183.38/x
  3. Step 3: Cross multiply
    743,479.86x = 1,025,968.77 × 421,183.38
  4. Step 4: Simplify right side
    743,479.86x = 432,120,994,323.04
  5. Step 5: Solve for x
    x = 432,120,994,323.04/743,479.86
  6. Step 6: Final answer
    x = 581,214.12

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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.