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Finding the Fourth Proportional to 528,666.62, 729,540.38 and 286,944.03

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Solution

The fourth proportional to 528,666.62, 729,540.38 and 286,944.03 is: 395,972.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,666.62 : 729,540.38 = 286,944.03 : x
  2. Step 2: Convert to fraction form
    528,666.62/729,540.38 = 286,944.03/x
  3. Step 3: Cross multiply
    528,666.62x = 729,540.38 × 286,944.03
  4. Step 4: Simplify right side
    528,666.62x = 209,337,257,402.29
  5. Step 5: Solve for x
    x = 209,337,257,402.29/528,666.62
  6. Step 6: Final answer
    x = 395,972.15

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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.