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Finding the Fourth Proportional to 501,696.64, 692,340.80 and 275,342.72

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Solution

The fourth proportional to 501,696.64, 692,340.80 and 275,342.72 is: 379,972.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,696.64 : 692,340.80 = 275,342.72 : x
  2. Step 2: Convert to fraction form
    501,696.64/692,340.80 = 275,342.72/x
  3. Step 3: Cross multiply
    501,696.64x = 692,340.80 × 275,342.72
  4. Step 4: Simplify right side
    501,696.64x = 190,630,999,038.98
  5. Step 5: Solve for x
    x = 190,630,999,038.98/501,696.64
  6. Step 6: Final answer
    x = 379,972.64

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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.