Home / 812,492.40-1,218,738.60-806,962.80

Finding the Fourth Proportional to 812,492.40, 1,218,738.60 and 806,962.80

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Solution

The fourth proportional to 812,492.40, 1,218,738.60 and 806,962.80 is: 1,210,444.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,492.40 : 1,218,738.60 = 806,962.80 : x
  2. Step 2: Convert to fraction form
    812,492.40/1,218,738.60 = 806,962.80/x
  3. Step 3: Cross multiply
    812,492.40x = 1,218,738.60 × 806,962.80
  4. Step 4: Simplify right side
    812,492.40x = 983,476,713,124.08
  5. Step 5: Solve for x
    x = 983,476,713,124.08/812,492.40
  6. Step 6: Final answer
    x = 1,210,444.20

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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.