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Finding the Fourth Proportional to 490,507.98, 676,918.83 and 275,652.30

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Solution

The fourth proportional to 490,507.98, 676,918.83 and 275,652.30 is: 380,410.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,507.98 : 676,918.83 = 275,652.30 : x
  2. Step 2: Convert to fraction form
    490,507.98/676,918.83 = 275,652.30/x
  3. Step 3: Cross multiply
    490,507.98x = 676,918.83 × 275,652.30
  4. Step 4: Simplify right side
    490,507.98x = 186,594,232,402.81
  5. Step 5: Solve for x
    x = 186,594,232,402.81/490,507.98
  6. Step 6: Final answer
    x = 380,410.19

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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.