Home / 688,264.20-949,638.42-401,620.68

Finding the Fourth Proportional to 688,264.20, 949,638.42 and 401,620.68

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Solution

The fourth proportional to 688,264.20, 949,638.42 and 401,620.68 is: 554,139.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,264.20 : 949,638.42 = 401,620.68 : x
  2. Step 2: Convert to fraction form
    688,264.20/949,638.42 = 401,620.68/x
  3. Step 3: Cross multiply
    688,264.20x = 949,638.42 × 401,620.68
  4. Step 4: Simplify right side
    688,264.20x = 381,394,427,994.53
  5. Step 5: Solve for x
    x = 381,394,427,994.53/688,264.20
  6. Step 6: Final answer
    x = 554,139.57

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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.