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Finding the Fourth Proportional to 483,064.40, 723,214.20 and 427,768.40

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Solution

The fourth proportional to 483,064.40, 723,214.20 and 427,768.40 is: 640,428.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,064.40 : 723,214.20 = 427,768.40 : x
  2. Step 2: Convert to fraction form
    483,064.40/723,214.20 = 427,768.40/x
  3. Step 3: Cross multiply
    483,064.40x = 723,214.20 × 427,768.40
  4. Step 4: Simplify right side
    483,064.40x = 309,368,181,191.28
  5. Step 5: Solve for x
    x = 309,368,181,191.28/483,064.40
  6. Step 6: Final answer
    x = 640,428.44

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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.