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Finding the Fourth Proportional to 647,564.88, 972,192.04 and 435,283.72

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Solution

The fourth proportional to 647,564.88, 972,192.04 and 435,283.72 is: 653,493.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,564.88 : 972,192.04 = 435,283.72 : x
  2. Step 2: Convert to fraction form
    647,564.88/972,192.04 = 435,283.72/x
  3. Step 3: Cross multiply
    647,564.88x = 972,192.04 × 435,283.72
  4. Step 4: Simplify right side
    647,564.88x = 423,179,367,725.59
  5. Step 5: Solve for x
    x = 423,179,367,725.59/647,564.88
  6. Step 6: Final answer
    x = 653,493.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.