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Finding the Fourth Proportional to 611,091.42, 843,293.48 and 339,143.51

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Solution

The fourth proportional to 611,091.42, 843,293.48 and 339,143.51 is: 468,011.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,091.42 : 843,293.48 = 339,143.51 : x
  2. Step 2: Convert to fraction form
    611,091.42/843,293.48 = 339,143.51/x
  3. Step 3: Cross multiply
    611,091.42x = 843,293.48 × 339,143.51
  4. Step 4: Simplify right side
    611,091.42x = 285,997,504,855.13
  5. Step 5: Solve for x
    x = 285,997,504,855.13/611,091.42
  6. Step 6: Final answer
    x = 468,011.00

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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.