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Finding the Fourth Proportional to 565,219.89, 780,003.27 and 310,587.48

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Solution

The fourth proportional to 565,219.89, 780,003.27 and 310,587.48 is: 428,610.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,219.89 : 780,003.27 = 310,587.48 : x
  2. Step 2: Convert to fraction form
    565,219.89/780,003.27 = 310,587.48/x
  3. Step 3: Cross multiply
    565,219.89x = 780,003.27 × 310,587.48
  4. Step 4: Simplify right side
    565,219.89x = 242,259,250,021.06
  5. Step 5: Solve for x
    x = 242,259,250,021.06/565,219.89
  6. Step 6: Final answer
    x = 428,610.62

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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.