Home / 812,546.76-1,218,155.18-306,820.84

Finding the Fourth Proportional to 812,546.76, 1,218,155.18 and 306,820.84

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Solution

The fourth proportional to 812,546.76, 1,218,155.18 and 306,820.84 is: 459,980.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,546.76 : 1,218,155.18 = 306,820.84 : x
  2. Step 2: Convert to fraction form
    812,546.76/1,218,155.18 = 306,820.84/x
  3. Step 3: Cross multiply
    812,546.76x = 1,218,155.18 × 306,820.84
  4. Step 4: Simplify right side
    812,546.76x = 373,755,395,577.95
  5. Step 5: Solve for x
    x = 373,755,395,577.95/812,546.76
  6. Step 6: Final answer
    x = 459,980.17

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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.