Home / 647,721.72-971,592.36-292,488.12

Finding the Fourth Proportional to 647,721.72, 971,592.36 and 292,488.12

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Solution

The fourth proportional to 647,721.72, 971,592.36 and 292,488.12 is: 438,736.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,721.72 : 971,592.36 = 292,488.12 : x
  2. Step 2: Convert to fraction form
    647,721.72/971,592.36 = 292,488.12/x
  3. Step 3: Cross multiply
    647,721.72x = 971,592.36 × 292,488.12
  4. Step 4: Simplify right side
    647,721.72x = 284,179,222,782.76
  5. Step 5: Solve for x
    x = 284,179,222,782.76/647,721.72
  6. Step 6: Final answer
    x = 438,736.60

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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.