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Finding the Fourth Proportional to 425,920.40, 587,959.08 and 275,090.96

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Solution

The fourth proportional to 425,920.40, 587,959.08 and 275,090.96 is: 379,747.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,920.40 : 587,959.08 = 275,090.96 : x
  2. Step 2: Convert to fraction form
    425,920.40/587,959.08 = 275,090.96/x
  3. Step 3: Cross multiply
    425,920.40x = 587,959.08 × 275,090.96
  4. Step 4: Simplify right side
    425,920.40x = 161,742,227,757.92
  5. Step 5: Solve for x
    x = 161,742,227,757.92/425,920.40
  6. Step 6: Final answer
    x = 379,747.55

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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.