Home / 778,416.04-1,074,213.64-420,720.04

Finding the Fourth Proportional to 778,416.04, 1,074,213.64 and 420,720.04

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Solution

The fourth proportional to 778,416.04, 1,074,213.64 and 420,720.04 is: 580,593.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,416.04 : 1,074,213.64 = 420,720.04 : x
  2. Step 2: Convert to fraction form
    778,416.04/1,074,213.64 = 420,720.04/x
  3. Step 3: Cross multiply
    778,416.04x = 1,074,213.64 × 420,720.04
  4. Step 4: Simplify right side
    778,416.04x = 451,943,205,589.35
  5. Step 5: Solve for x
    x = 451,943,205,589.35/778,416.04
  6. Step 6: Final answer
    x = 580,593.39

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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.