Home / 505,066.59-697,111.14-290,331.21

Finding the Fourth Proportional to 505,066.59, 697,111.14 and 290,331.21

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Solution

The fourth proportional to 505,066.59, 697,111.14 and 290,331.21 is: 400,725.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,066.59 : 697,111.14 = 290,331.21 : x
  2. Step 2: Convert to fraction form
    505,066.59/697,111.14 = 290,331.21/x
  3. Step 3: Cross multiply
    505,066.59x = 697,111.14 × 290,331.21
  4. Step 4: Simplify right side
    505,066.59x = 202,393,120,780.68
  5. Step 5: Solve for x
    x = 202,393,120,780.68/505,066.59
  6. Step 6: Final answer
    x = 400,725.62

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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.