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Finding the Fourth Proportional to 696,667.65, 961,411.32 and 521,928.24

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Solution

The fourth proportional to 696,667.65, 961,411.32 and 521,928.24 is: 720,268.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,667.65 : 961,411.32 = 521,928.24 : x
  2. Step 2: Convert to fraction form
    696,667.65/961,411.32 = 521,928.24/x
  3. Step 3: Cross multiply
    696,667.65x = 961,411.32 × 521,928.24
  4. Step 4: Simplify right side
    696,667.65x = 501,787,718,163.68
  5. Step 5: Solve for x
    x = 501,787,718,163.68/696,667.65
  6. Step 6: Final answer
    x = 720,268.44

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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.