Home / 855,399.29-1,180,408.95-487,890.95

Finding the Fourth Proportional to 855,399.29, 1,180,408.95 and 487,890.95

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Solution

The fourth proportional to 855,399.29, 1,180,408.95 and 487,890.95 is: 673,265.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,399.29 : 1,180,408.95 = 487,890.95 : x
  2. Step 2: Convert to fraction form
    855,399.29/1,180,408.95 = 487,890.95/x
  3. Step 3: Cross multiply
    855,399.29x = 1,180,408.95 × 487,890.95
  4. Step 4: Simplify right side
    855,399.29x = 575,910,838,101.96
  5. Step 5: Solve for x
    x = 575,910,838,101.96/855,399.29
  6. Step 6: Final answer
    x = 673,265.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.