Home / 688,265.20-949,639.80-401,621.68

Finding the Fourth Proportional to 688,265.20, 949,639.80 and 401,621.68

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Solution

The fourth proportional to 688,265.20, 949,639.80 and 401,621.68 is: 554,140.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,265.20 : 949,639.80 = 401,621.68 : x
  2. Step 2: Convert to fraction form
    688,265.20/949,639.80 = 401,621.68/x
  3. Step 3: Cross multiply
    688,265.20x = 949,639.80 × 401,621.68
  4. Step 4: Simplify right side
    688,265.20x = 381,395,931,870.86
  5. Step 5: Solve for x
    x = 381,395,931,870.86/688,265.20
  6. Step 6: Final answer
    x = 554,140.95

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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.