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Finding the Fourth Proportional to 517,413.64, 714,009.88 and 287,964.44

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Solution

The fourth proportional to 517,413.64, 714,009.88 and 287,964.44 is: 397,379.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,413.64 : 714,009.88 = 287,964.44 : x
  2. Step 2: Convert to fraction form
    517,413.64/714,009.88 = 287,964.44/x
  3. Step 3: Cross multiply
    517,413.64x = 714,009.88 × 287,964.44
  4. Step 4: Simplify right side
    517,413.64x = 205,609,455,248.67
  5. Step 5: Solve for x
    x = 205,609,455,248.67/517,413.64
  6. Step 6: Final answer
    x = 397,379.27

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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.