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Finding the Fourth Proportional to 577,986.45, 865,857.96 and 425,907.60

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Solution

The fourth proportional to 577,986.45, 865,857.96 and 425,907.60 is: 638,034.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,986.45 : 865,857.96 = 425,907.60 : x
  2. Step 2: Convert to fraction form
    577,986.45/865,857.96 = 425,907.60/x
  3. Step 3: Cross multiply
    577,986.45x = 865,857.96 × 425,907.60
  4. Step 4: Simplify right side
    577,986.45x = 368,775,485,684.50
  5. Step 5: Solve for x
    x = 368,775,485,684.50/577,986.45
  6. Step 6: Final answer
    x = 638,034.83

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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.