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Finding the Fourth Proportional to 505,373.64, 697,397.30 and 275,926.69

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Solution

The fourth proportional to 505,373.64, 697,397.30 and 275,926.69 is: 380,768.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,373.64 : 697,397.30 = 275,926.69 : x
  2. Step 2: Convert to fraction form
    505,373.64/697,397.30 = 275,926.69/x
  3. Step 3: Cross multiply
    505,373.64x = 697,397.30 × 275,926.69
  4. Step 4: Simplify right side
    505,373.64x = 192,430,528,603.94
  5. Step 5: Solve for x
    x = 192,430,528,603.94/505,373.64
  6. Step 6: Final answer
    x = 380,768.83

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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.