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Finding the Fourth Proportional to 692,439.27, 955,563.62 and 386,512.98

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Solution

The fourth proportional to 692,439.27, 955,563.62 and 386,512.98 is: 533,386.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,439.27 : 955,563.62 = 386,512.98 : x
  2. Step 2: Convert to fraction form
    692,439.27/955,563.62 = 386,512.98/x
  3. Step 3: Cross multiply
    692,439.27x = 955,563.62 × 386,512.98
  4. Step 4: Simplify right side
    692,439.27x = 369,337,740,413.22
  5. Step 5: Solve for x
    x = 369,337,740,413.22/692,439.27
  6. Step 6: Final answer
    x = 533,386.47

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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.