Home / 920,635.74-1,381,284.81-321,685.02

Finding the Fourth Proportional to 920,635.74, 1,381,284.81 and 321,685.02

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Solution

The fourth proportional to 920,635.74, 1,381,284.81 and 321,685.02 is: 482,643.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,635.74 : 1,381,284.81 = 321,685.02 : x
  2. Step 2: Convert to fraction form
    920,635.74/1,381,284.81 = 321,685.02/x
  3. Step 3: Cross multiply
    920,635.74x = 1,381,284.81 × 321,685.02
  4. Step 4: Simplify right side
    920,635.74x = 444,338,631,730.55
  5. Step 5: Solve for x
    x = 444,338,631,730.55/920,635.74
  6. Step 6: Final answer
    x = 482,643.26

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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.