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Finding the Fourth Proportional to 462,648.72, 638,456.40 and 258,707.04

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Solution

The fourth proportional to 462,648.72, 638,456.40 and 258,707.04 is: 357,016.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,648.72 : 638,456.40 = 258,707.04 : x
  2. Step 2: Convert to fraction form
    462,648.72/638,456.40 = 258,707.04/x
  3. Step 3: Cross multiply
    462,648.72x = 638,456.40 × 258,707.04
  4. Step 4: Simplify right side
    462,648.72x = 165,173,165,413.06
  5. Step 5: Solve for x
    x = 165,173,165,413.06/462,648.72
  6. Step 6: Final answer
    x = 357,016.37

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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.