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Finding the Fourth Proportional to 524,125.63, 786,579 and 389,499.85

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Solution

The fourth proportional to 524,125.63, 786,579 and 389,499.85 is: 584,540.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,125.63 : 786,579 = 389,499.85 : x
  2. Step 2: Convert to fraction form
    524,125.63/786,579 = 389,499.85/x
  3. Step 3: Cross multiply
    524,125.63x = 786,579 × 389,499.85
  4. Step 4: Simplify right side
    524,125.63x = 306,372,402,513.15
  5. Step 5: Solve for x
    x = 306,372,402,513.15/524,125.63
  6. Step 6: Final answer
    x = 584,540.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.