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Finding the Fourth Proportional to 503,929.71, 695,427.10 and 274,487.90

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Solution

The fourth proportional to 503,929.71, 695,427.10 and 274,487.90 is: 378,795.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,929.71 : 695,427.10 = 274,487.90 : x
  2. Step 2: Convert to fraction form
    503,929.71/695,427.10 = 274,487.90/x
  3. Step 3: Cross multiply
    503,929.71x = 695,427.10 × 274,487.90
  4. Step 4: Simplify right side
    503,929.71x = 190,886,320,118.74
  5. Step 5: Solve for x
    x = 190,886,320,118.74/503,929.71
  6. Step 6: Final answer
    x = 378,795.53

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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.