Home / 878,463.87-1,212,271.60-491,274.89

Finding the Fourth Proportional to 878,463.87, 1,212,271.60 and 491,274.89

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Solution

The fourth proportional to 878,463.87, 1,212,271.60 and 491,274.89 is: 677,954.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,463.87 : 1,212,271.60 = 491,274.89 : x
  2. Step 2: Convert to fraction form
    878,463.87/1,212,271.60 = 491,274.89/x
  3. Step 3: Cross multiply
    878,463.87x = 1,212,271.60 × 491,274.89
  4. Step 4: Simplify right side
    878,463.87x = 595,558,591,492.86
  5. Step 5: Solve for x
    x = 595,558,591,492.86/878,463.87
  6. Step 6: Final answer
    x = 677,954.57

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Double scale
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1.5x scale

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.