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Finding the Fourth Proportional to 565,980.96, 781,057.44 and 311,325.60

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Solution

The fourth proportional to 565,980.96, 781,057.44 and 311,325.60 is: 429,631.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,980.96 : 781,057.44 = 311,325.60 : x
  2. Step 2: Convert to fraction form
    565,980.96/781,057.44 = 311,325.60/x
  3. Step 3: Cross multiply
    565,980.96x = 781,057.44 × 311,325.60
  4. Step 4: Simplify right side
    565,980.96x = 243,163,176,142.46
  5. Step 5: Solve for x
    x = 243,163,176,142.46/565,980.96
  6. Step 6: Final answer
    x = 429,631.37

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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.