Home / 812,300.28-1,218,588.72-407,685.44

Finding the Fourth Proportional to 812,300.28, 1,218,588.72 and 407,685.44

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Solution

The fourth proportional to 812,300.28, 1,218,588.72 and 407,685.44 is: 611,597.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,300.28 : 1,218,588.72 = 407,685.44 : x
  2. Step 2: Convert to fraction form
    812,300.28/1,218,588.72 = 407,685.44/x
  3. Step 3: Cross multiply
    812,300.28x = 1,218,588.72 × 407,685.44
  4. Step 4: Simplify right side
    812,300.28x = 496,800,878,492.24
  5. Step 5: Solve for x
    x = 496,800,878,492.24/812,300.28
  6. Step 6: Final answer
    x = 611,597.57

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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.