Home / 808,385.20-1,213,015.20-335,118.40

Finding the Fourth Proportional to 808,385.20, 1,213,015.20 and 335,118.40

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Solution

The fourth proportional to 808,385.20, 1,213,015.20 and 335,118.40 is: 502,858.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,385.20 : 1,213,015.20 = 335,118.40 : x
  2. Step 2: Convert to fraction form
    808,385.20/1,213,015.20 = 335,118.40/x
  3. Step 3: Cross multiply
    808,385.20x = 1,213,015.20 × 335,118.40
  4. Step 4: Simplify right side
    808,385.20x = 406,503,712,999.68
  5. Step 5: Solve for x
    x = 406,503,712,999.68/808,385.20
  6. Step 6: Final answer
    x = 502,858.93

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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.