Home / 505,374.03-697,405.86-290,512.22

Finding the Fourth Proportional to 505,374.03, 697,405.86 and 290,512.22

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Solution

The fourth proportional to 505,374.03, 697,405.86 and 290,512.22 is: 400,900.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,374.03 : 697,405.86 = 290,512.22 : x
  2. Step 2: Convert to fraction form
    505,374.03/697,405.86 = 290,512.22/x
  3. Step 3: Cross multiply
    505,374.03x = 697,405.86 × 290,512.22
  4. Step 4: Simplify right side
    505,374.03x = 202,604,921,142.58
  5. Step 5: Solve for x
    x = 202,604,921,142.58/505,374.03
  6. Step 6: Final answer
    x = 400,900.93

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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.