Home / 687,755.61-1,029,738.02-518,764.30

Finding the Fourth Proportional to 687,755.61, 1,029,738.02 and 518,764.30

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Solution

The fourth proportional to 687,755.61, 1,029,738.02 and 518,764.30 is: 776,716.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,755.61 : 1,029,738.02 = 518,764.30 : x
  2. Step 2: Convert to fraction form
    687,755.61/1,029,738.02 = 518,764.30/x
  3. Step 3: Cross multiply
    687,755.61x = 1,029,738.02 × 518,764.30
  4. Step 4: Simplify right side
    687,755.61x = 534,191,317,960.52
  5. Step 5: Solve for x
    x = 534,191,317,960.52/687,755.61
  6. Step 6: Final answer
    x = 776,716.77

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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.