Home / 521,526.71-719,818.07-306,789.28

Finding the Fourth Proportional to 521,526.71, 719,818.07 and 306,789.28

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Solution

The fourth proportional to 521,526.71, 719,818.07 and 306,789.28 is: 423,434.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,526.71 : 719,818.07 = 306,789.28 : x
  2. Step 2: Convert to fraction form
    521,526.71/719,818.07 = 306,789.28/x
  3. Step 3: Cross multiply
    521,526.71x = 719,818.07 × 306,789.28
  4. Step 4: Simplify right side
    521,526.71x = 220,832,471,958.26
  5. Step 5: Solve for x
    x = 220,832,471,958.26/521,526.71
  6. Step 6: Final answer
    x = 423,434.63

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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.