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Finding the Fourth Proportional to 672,486.21, 928,003.04 and 366,555.86

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Solution

The fourth proportional to 672,486.21, 928,003.04 and 366,555.86 is: 505,831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,486.21 : 928,003.04 = 366,555.86 : x
  2. Step 2: Convert to fraction form
    672,486.21/928,003.04 = 366,555.86/x
  3. Step 3: Cross multiply
    672,486.21x = 928,003.04 × 366,555.86
  4. Step 4: Simplify right side
    672,486.21x = 340,164,952,409.81
  5. Step 5: Solve for x
    x = 340,164,952,409.81/672,486.21
  6. Step 6: Final answer
    x = 505,831.86

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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.