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Finding the Fourth Proportional to 565,538.44, 780,423.24 and 310,887.96

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Solution

The fourth proportional to 565,538.44, 780,423.24 and 310,887.96 is: 429,014.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,538.44 : 780,423.24 = 310,887.96 : x
  2. Step 2: Convert to fraction form
    565,538.44/780,423.24 = 310,887.96/x
  3. Step 3: Cross multiply
    565,538.44x = 780,423.24 × 310,887.96
  4. Step 4: Simplify right side
    565,538.44x = 242,624,189,020.19
  5. Step 5: Solve for x
    x = 242,624,189,020.19/565,538.44
  6. Step 6: Final answer
    x = 429,014.50

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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.