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Finding the Fourth Proportional to 640,172.44, 883,362.66 and 353,675.44

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Solution

The fourth proportional to 640,172.44, 883,362.66 and 353,675.44 is: 488,030.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,172.44 : 883,362.66 = 353,675.44 : x
  2. Step 2: Convert to fraction form
    640,172.44/883,362.66 = 353,675.44/x
  3. Step 3: Cross multiply
    640,172.44x = 883,362.66 × 353,675.44
  4. Step 4: Simplify right side
    640,172.44x = 312,423,677,455.07
  5. Step 5: Solve for x
    x = 312,423,677,455.07/640,172.44
  6. Step 6: Final answer
    x = 488,030.50

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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.