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Finding the Fourth Proportional to 567,744.99, 783,485.85 and 309,621.35

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Solution

The fourth proportional to 567,744.99, 783,485.85 and 309,621.35 is: 427,276.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,744.99 : 783,485.85 = 309,621.35 : x
  2. Step 2: Convert to fraction form
    567,744.99/783,485.85 = 309,621.35/x
  3. Step 3: Cross multiply
    567,744.99x = 783,485.85 × 309,621.35
  4. Step 4: Simplify right side
    567,744.99x = 242,583,942,665.47
  5. Step 5: Solve for x
    x = 242,583,942,665.47/567,744.99
  6. Step 6: Final answer
    x = 427,276.24

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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.