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Finding the Fourth Proportional to 550,740.86, 758,606.28 and 389,318.30

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Solution

The fourth proportional to 550,740.86, 758,606.28 and 389,318.30 is: 536,258.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,740.86 : 758,606.28 = 389,318.30 : x
  2. Step 2: Convert to fraction form
    550,740.86/758,606.28 = 389,318.30/x
  3. Step 3: Cross multiply
    550,740.86x = 758,606.28 × 389,318.30
  4. Step 4: Simplify right side
    550,740.86x = 295,339,307,298.92
  5. Step 5: Solve for x
    x = 295,339,307,298.92/550,740.86
  6. Step 6: Final answer
    x = 536,258.21

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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.