Home / 505,106.10-697,165.56-290,370.60

Finding the Fourth Proportional to 505,106.10, 697,165.56 and 290,370.60

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Solution

The fourth proportional to 505,106.10, 697,165.56 and 290,370.60 is: 400,779.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,106.10 : 697,165.56 = 290,370.60 : x
  2. Step 2: Convert to fraction form
    505,106.10/697,165.56 = 290,370.60/x
  3. Step 3: Cross multiply
    505,106.10x = 697,165.56 × 290,370.60
  4. Step 4: Simplify right side
    505,106.10x = 202,436,381,956.54
  5. Step 5: Solve for x
    x = 202,436,381,956.54/505,106.10
  6. Step 6: Final answer
    x = 400,779.92

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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.