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Finding the Fourth Proportional to 806,670.68, 1,210,754.16 and 407,591.72

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Solution

The fourth proportional to 806,670.68, 1,210,754.16 and 407,591.72 is: 611,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,670.68 : 1,210,754.16 = 407,591.72 : x
  2. Step 2: Convert to fraction form
    806,670.68/1,210,754.16 = 407,591.72/x
  3. Step 3: Cross multiply
    806,670.68x = 1,210,754.16 × 407,591.72
  4. Step 4: Simplify right side
    806,670.68x = 493,493,370,571.56
  5. Step 5: Solve for x
    x = 493,493,370,571.56/806,670.68
  6. Step 6: Final answer
    x = 611,765.60

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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.