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Finding the Fourth Proportional to 579,431.79, 799,652.79 and 324,783

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Solution

The fourth proportional to 579,431.79, 799,652.79 and 324,783 is: 448,221.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,431.79 : 799,652.79 = 324,783 : x
  2. Step 2: Convert to fraction form
    579,431.79/799,652.79 = 324,783/x
  3. Step 3: Cross multiply
    579,431.79x = 799,652.79 × 324,783
  4. Step 4: Simplify right side
    579,431.79x = 259,713,632,094.57
  5. Step 5: Solve for x
    x = 259,713,632,094.57/579,431.79
  6. Step 6: Final answer
    x = 448,221.23

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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.