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Finding the Fourth Proportional to 520,313.37, 779,996.40 and 200,260.90

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Solution

The fourth proportional to 520,313.37, 779,996.40 and 200,260.90 is: 300,209.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,313.37 : 779,996.40 = 200,260.90 : x
  2. Step 2: Convert to fraction form
    520,313.37/779,996.40 = 200,260.90/x
  3. Step 3: Cross multiply
    520,313.37x = 779,996.40 × 200,260.90
  4. Step 4: Simplify right side
    520,313.37x = 156,202,781,060.76
  5. Step 5: Solve for x
    x = 156,202,781,060.76/520,313.37
  6. Step 6: Final answer
    x = 300,209.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.