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Finding the Fourth Proportional to 490,395.16, 676,726.48 and 275,544.28

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Solution

The fourth proportional to 490,395.16, 676,726.48 and 275,544.28 is: 380,240.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,395.16 : 676,726.48 = 275,544.28 : x
  2. Step 2: Convert to fraction form
    490,395.16/676,726.48 = 275,544.28/x
  3. Step 3: Cross multiply
    490,395.16x = 676,726.48 × 275,544.28
  4. Step 4: Simplify right side
    490,395.16x = 186,468,110,688.53
  5. Step 5: Solve for x
    x = 186,468,110,688.53/490,395.16
  6. Step 6: Final answer
    x = 380,240.52

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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.