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Finding the Fourth Proportional to 521,996.60, 784,161.30 and 507,999.80

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Solution

The fourth proportional to 521,996.60, 784,161.30 and 507,999.80 is: 763,134.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,996.60 : 784,161.30 = 507,999.80 : x
  2. Step 2: Convert to fraction form
    521,996.60/784,161.30 = 507,999.80/x
  3. Step 3: Cross multiply
    521,996.60x = 784,161.30 × 507,999.80
  4. Step 4: Simplify right side
    521,996.60x = 398,353,783,567.74
  5. Step 5: Solve for x
    x = 398,353,783,567.74/521,996.60
  6. Step 6: Final answer
    x = 763,134.82

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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.