Home / 521,007.31-719,028.78-291,587.63

Finding the Fourth Proportional to 521,007.31, 719,028.78 and 291,587.63

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Solution

The fourth proportional to 521,007.31, 719,028.78 and 291,587.63 is: 402,412.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,007.31 : 719,028.78 = 291,587.63 : x
  2. Step 2: Convert to fraction form
    521,007.31/719,028.78 = 291,587.63/x
  3. Step 3: Cross multiply
    521,007.31x = 719,028.78 × 291,587.63
  4. Step 4: Simplify right side
    521,007.31x = 209,659,897,861.99
  5. Step 5: Solve for x
    x = 209,659,897,861.99/521,007.31
  6. Step 6: Final answer
    x = 402,412.59

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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.