Home / 505,518.24-697,615.20-279,178.32

Finding the Fourth Proportional to 505,518.24, 697,615.20 and 279,178.32

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Solution

The fourth proportional to 505,518.24, 697,615.20 and 279,178.32 is: 385,266.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,518.24 : 697,615.20 = 279,178.32 : x
  2. Step 2: Convert to fraction form
    505,518.24/697,615.20 = 279,178.32/x
  3. Step 3: Cross multiply
    505,518.24x = 697,615.20 × 279,178.32
  4. Step 4: Simplify right side
    505,518.24x = 194,759,039,542.46
  5. Step 5: Solve for x
    x = 194,759,039,542.46/505,518.24
  6. Step 6: Final answer
    x = 385,266.10

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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.