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Finding the Fourth Proportional to 558,643.47, 838,380.93 and 274,486.56

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Solution

The fourth proportional to 558,643.47, 838,380.93 and 274,486.56 is: 411,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,643.47 : 838,380.93 = 274,486.56 : x
  2. Step 2: Convert to fraction form
    558,643.47/838,380.93 = 274,486.56/x
  3. Step 3: Cross multiply
    558,643.47x = 838,380.93 × 274,486.56
  4. Step 4: Simplify right side
    558,643.47x = 230,124,297,445.30
  5. Step 5: Solve for x
    x = 230,124,297,445.30/558,643.47
  6. Step 6: Final answer
    x = 411,934.10

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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.