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Finding the Fourth Proportional to 505,230.51, 757,784.34 and 315,707.79

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Solution

The fourth proportional to 505,230.51, 757,784.34 and 315,707.79 is: 473,523.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,230.51 : 757,784.34 = 315,707.79 : x
  2. Step 2: Convert to fraction form
    505,230.51/757,784.34 = 315,707.79/x
  3. Step 3: Cross multiply
    505,230.51x = 757,784.34 × 315,707.79
  4. Step 4: Simplify right side
    505,230.51x = 239,238,419,278.01
  5. Step 5: Solve for x
    x = 239,238,419,278.01/505,230.51
  6. Step 6: Final answer
    x = 473,523.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.