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Finding the Fourth Proportional to 610,611.30, 842,092.20 and 381,189.69

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Solution

The fourth proportional to 610,611.30, 842,092.20 and 381,189.69 is: 525,697.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,611.30 : 842,092.20 = 381,189.69 : x
  2. Step 2: Convert to fraction form
    610,611.30/842,092.20 = 381,189.69/x
  3. Step 3: Cross multiply
    610,611.30x = 842,092.20 × 381,189.69
  4. Step 4: Simplify right side
    610,611.30x = 320,996,864,669.42
  5. Step 5: Solve for x
    x = 320,996,864,669.42/610,611.30
  6. Step 6: Final answer
    x = 525,697.55

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1.5x scale

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.