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Finding the Fourth Proportional to 505,324.80, 697,438.08 and 301,388.16

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Solution

The fourth proportional to 505,324.80, 697,438.08 and 301,388.16 is: 415,969.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,324.80 : 697,438.08 = 301,388.16 : x
  2. Step 2: Convert to fraction form
    505,324.80/697,438.08 = 301,388.16/x
  3. Step 3: Cross multiply
    505,324.80x = 697,438.08 × 301,388.16
  4. Step 4: Simplify right side
    505,324.80x = 210,199,579,645.13
  5. Step 5: Solve for x
    x = 210,199,579,645.13/505,324.80
  6. Step 6: Final answer
    x = 415,969.25

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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.