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Finding the Fourth Proportional to 565,385.56, 780,234.60 and 310,753.15

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Solution

The fourth proportional to 565,385.56, 780,234.60 and 310,753.15 is: 428,840.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,385.56 : 780,234.60 = 310,753.15 : x
  2. Step 2: Convert to fraction form
    565,385.56/780,234.60 = 310,753.15/x
  3. Step 3: Cross multiply
    565,385.56x = 780,234.60 × 310,753.15
  4. Step 4: Simplify right side
    565,385.56x = 242,460,359,688.99
  5. Step 5: Solve for x
    x = 242,460,359,688.99/565,385.56
  6. Step 6: Final answer
    x = 428,840.74

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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.