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Finding the Fourth Proportional to 671,684, 926,923.92 and 369,878

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Solution

The fourth proportional to 671,684, 926,923.92 and 369,878 is: 510,431.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,684 : 926,923.92 = 369,878 : x
  2. Step 2: Convert to fraction form
    671,684/926,923.92 = 369,878/x
  3. Step 3: Cross multiply
    671,684x = 926,923.92 × 369,878
  4. Step 4: Simplify right side
    671,684x = 342,848,765,681.76
  5. Step 5: Solve for x
    x = 342,848,765,681.76/671,684
  6. Step 6: Final answer
    x = 510,431.64

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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.