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Finding the Fourth Proportional to 490,259.55, 676,484.49 and 275,358.45

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Solution

The fourth proportional to 490,259.55, 676,484.49 and 275,358.45 is: 379,953.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,259.55 : 676,484.49 = 275,358.45 : x
  2. Step 2: Convert to fraction form
    490,259.55/676,484.49 = 275,358.45/x
  3. Step 3: Cross multiply
    490,259.55x = 676,484.49 × 275,358.45
  4. Step 4: Simplify right side
    490,259.55x = 186,275,720,615.44
  5. Step 5: Solve for x
    x = 186,275,720,615.44/490,259.55
  6. Step 6: Final answer
    x = 379,953.27

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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.