Home / 813,100.15-1,220,767.41-414,009.10

Finding the Fourth Proportional to 813,100.15, 1,220,767.41 and 414,009.10

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Solution

The fourth proportional to 813,100.15, 1,220,767.41 and 414,009.10 is: 621,582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,100.15 : 1,220,767.41 = 414,009.10 : x
  2. Step 2: Convert to fraction form
    813,100.15/1,220,767.41 = 414,009.10/x
  3. Step 3: Cross multiply
    813,100.15x = 1,220,767.41 × 414,009.10
  4. Step 4: Simplify right side
    813,100.15x = 505,408,810,619.59
  5. Step 5: Solve for x
    x = 505,408,810,619.59/813,100.15
  6. Step 6: Final answer
    x = 621,582.49

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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.