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Finding the Fourth Proportional to 569,620, 786,073.55 and 321,242.21

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Solution

The fourth proportional to 569,620, 786,073.55 and 321,242.21 is: 443,313.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,620 : 786,073.55 = 321,242.21 : x
  2. Step 2: Convert to fraction form
    569,620/786,073.55 = 321,242.21/x
  3. Step 3: Cross multiply
    569,620x = 786,073.55 × 321,242.21
  4. Step 4: Simplify right side
    569,620x = 252,520,004,424.55
  5. Step 5: Solve for x
    x = 252,520,004,424.55/569,620
  6. Step 6: Final answer
    x = 443,313.09

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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.