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Finding the Fourth Proportional to 550,387.18, 758,831.16 and 356,452.21

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Solution

The fourth proportional to 550,387.18, 758,831.16 and 356,452.21 is: 491,448.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,387.18 : 758,831.16 = 356,452.21 : x
  2. Step 2: Convert to fraction form
    550,387.18/758,831.16 = 356,452.21/x
  3. Step 3: Cross multiply
    550,387.18x = 758,831.16 × 356,452.21
  4. Step 4: Simplify right side
    550,387.18x = 270,487,043,998.86
  5. Step 5: Solve for x
    x = 270,487,043,998.86/550,387.18
  6. Step 6: Final answer
    x = 491,448.66

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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.