Home / 753,614.81-1,039,415.85-521,428.31

Finding the Fourth Proportional to 753,614.81, 1,039,415.85 and 521,428.31

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Solution

The fourth proportional to 753,614.81, 1,039,415.85 and 521,428.31 is: 719,174.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,614.81 : 1,039,415.85 = 521,428.31 : x
  2. Step 2: Convert to fraction form
    753,614.81/1,039,415.85 = 521,428.31/x
  3. Step 3: Cross multiply
    753,614.81x = 1,039,415.85 × 521,428.31
  4. Step 4: Simplify right side
    753,614.81x = 541,980,844,855.63
  5. Step 5: Solve for x
    x = 541,980,844,855.63/753,614.81
  6. Step 6: Final answer
    x = 719,174.89

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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.