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Finding the Fourth Proportional to 521,653.96, 719,864.58 and 306,744.76

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Solution

The fourth proportional to 521,653.96, 719,864.58 and 306,744.76 is: 423,297.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,653.96 : 719,864.58 = 306,744.76 : x
  2. Step 2: Convert to fraction form
    521,653.96/719,864.58 = 306,744.76/x
  3. Step 3: Cross multiply
    521,653.96x = 719,864.58 × 306,744.76
  4. Step 4: Simplify right side
    521,653.96x = 220,814,687,824.60
  5. Step 5: Solve for x
    x = 220,814,687,824.60/521,653.96
  6. Step 6: Final answer
    x = 423,297.25

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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.