Home / 521,030-719,021.40-294,670.64

Finding the Fourth Proportional to 521,030, 719,021.40 and 294,670.64

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Solution

The fourth proportional to 521,030, 719,021.40 and 294,670.64 is: 406,645.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,030 : 719,021.40 = 294,670.64 : x
  2. Step 2: Convert to fraction form
    521,030/719,021.40 = 294,670.64/x
  3. Step 3: Cross multiply
    521,030x = 719,021.40 × 294,670.64
  4. Step 4: Simplify right side
    521,030x = 211,874,496,111.70
  5. Step 5: Solve for x
    x = 211,874,496,111.70/521,030
  6. Step 6: Final answer
    x = 406,645.48

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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.