Home / 510,857.40-764,973.90-405,006.60

Finding the Fourth Proportional to 510,857.40, 764,973.90 and 405,006.60

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Solution

The fourth proportional to 510,857.40, 764,973.90 and 405,006.60 is: 606,469.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,857.40 : 764,973.90 = 405,006.60 : x
  2. Step 2: Convert to fraction form
    510,857.40/764,973.90 = 405,006.60/x
  3. Step 3: Cross multiply
    510,857.40x = 764,973.90 × 405,006.60
  4. Step 4: Simplify right side
    510,857.40x = 309,819,478,327.74
  5. Step 5: Solve for x
    x = 309,819,478,327.74/510,857.40
  6. Step 6: Final answer
    x = 606,469.59

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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.