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Finding the Fourth Proportional to 627,464.72, 865,922.20 and 369,295.04

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Solution

The fourth proportional to 627,464.72, 865,922.20 and 369,295.04 is: 509,639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,464.72 : 865,922.20 = 369,295.04 : x
  2. Step 2: Convert to fraction form
    627,464.72/865,922.20 = 369,295.04/x
  3. Step 3: Cross multiply
    627,464.72x = 865,922.20 × 369,295.04
  4. Step 4: Simplify right side
    627,464.72x = 319,780,773,485.89
  5. Step 5: Solve for x
    x = 319,780,773,485.89/627,464.72
  6. Step 6: Final answer
    x = 509,639.45

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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.