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Finding the Fourth Proportional to 528,251.81, 728,982.33 and 286,530.90

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Solution

The fourth proportional to 528,251.81, 728,982.33 and 286,530.90 is: 395,409.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,251.81 : 728,982.33 = 286,530.90 : x
  2. Step 2: Convert to fraction form
    528,251.81/728,982.33 = 286,530.90/x
  3. Step 3: Cross multiply
    528,251.81x = 728,982.33 × 286,530.90
  4. Step 4: Simplify right side
    528,251.81x = 208,875,965,003.08
  5. Step 5: Solve for x
    x = 208,875,965,003.08/528,251.81
  6. Step 6: Final answer
    x = 395,409.84

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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.