Home / 688,269.20-949,645.32-401,625.68

Finding the Fourth Proportional to 688,269.20, 949,645.32 and 401,625.68

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Solution

The fourth proportional to 688,269.20, 949,645.32 and 401,625.68 is: 554,146.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,269.20 : 949,645.32 = 401,625.68 : x
  2. Step 2: Convert to fraction form
    688,269.20/949,645.32 = 401,625.68/x
  3. Step 3: Cross multiply
    688,269.20x = 949,645.32 × 401,625.68
  4. Step 4: Simplify right side
    688,269.20x = 381,401,947,403.82
  5. Step 5: Solve for x
    x = 381,401,947,403.82/688,269.20
  6. Step 6: Final answer
    x = 554,146.47

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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.