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Finding the Fourth Proportional to 657,485.08, 986,670.48 and 258,078.54

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Solution

The fourth proportional to 657,485.08, 986,670.48 and 258,078.54 is: 387,291.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,485.08 : 986,670.48 = 258,078.54 : x
  2. Step 2: Convert to fraction form
    657,485.08/986,670.48 = 258,078.54/x
  3. Step 3: Cross multiply
    657,485.08x = 986,670.48 × 258,078.54
  4. Step 4: Simplify right side
    657,485.08x = 254,638,476,939.50
  5. Step 5: Solve for x
    x = 254,638,476,939.50/657,485.08
  6. Step 6: Final answer
    x = 387,291.64

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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.