Home / 5,216,186.42-7,823,440.34-1,428,783.86

Finding the Fourth Proportional to 5,216,186.42, 7,823,440.34 and 1,428,783.86

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Solution

The fourth proportional to 5,216,186.42, 7,823,440.34 and 1,428,783.86 is: 2,142,945.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216,186.42 : 7,823,440.34 = 1,428,783.86 : x
  2. Step 2: Convert to fraction form
    5,216,186.42/7,823,440.34 = 1,428,783.86/x
  3. Step 3: Cross multiply
    5,216,186.42x = 7,823,440.34 × 1,428,783.86
  4. Step 4: Simplify right side
    5,216,186.42x = 11,178,005,251,919.67
  5. Step 5: Solve for x
    x = 11,178,005,251,919.67/5,216,186.42
  6. Step 6: Final answer
    x = 2,142,945.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.