Home / 853,807.05-1,280,710.58-321,447.51

Finding the Fourth Proportional to 853,807.05, 1,280,710.58 and 321,447.51

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Solution

The fourth proportional to 853,807.05, 1,280,710.58 and 321,447.51 is: 482,171.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,807.05 : 1,280,710.58 = 321,447.51 : x
  2. Step 2: Convert to fraction form
    853,807.05/1,280,710.58 = 321,447.51/x
  3. Step 3: Cross multiply
    853,807.05x = 1,280,710.58 × 321,447.51
  4. Step 4: Simplify right side
    853,807.05x = 411,681,225,364.42
  5. Step 5: Solve for x
    x = 411,681,225,364.42/853,807.05
  6. Step 6: Final answer
    x = 482,171.27

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Double scale
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Similar ratio
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1.5x scale

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.