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Finding the Fourth Proportional to 640,954.98, 884,516.22 and 368,923.50

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Solution

The fourth proportional to 640,954.98, 884,516.22 and 368,923.50 is: 509,113.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,954.98 : 884,516.22 = 368,923.50 : x
  2. Step 2: Convert to fraction form
    640,954.98/884,516.22 = 368,923.50/x
  3. Step 3: Cross multiply
    640,954.98x = 884,516.22 × 368,923.50
  4. Step 4: Simplify right side
    640,954.98x = 326,318,819,689.17
  5. Step 5: Solve for x
    x = 326,318,819,689.17/640,954.98
  6. Step 6: Final answer
    x = 509,113.48

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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.