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Finding the Fourth Proportional to 483,458.30, 724,312.65 and 394,228.70

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Solution

The fourth proportional to 483,458.30, 724,312.65 and 394,228.70 is: 590,629.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,458.30 : 724,312.65 = 394,228.70 : x
  2. Step 2: Convert to fraction form
    483,458.30/724,312.65 = 394,228.70/x
  3. Step 3: Cross multiply
    483,458.30x = 724,312.65 × 394,228.70
  4. Step 4: Simplify right side
    483,458.30x = 285,544,834,403.06
  5. Step 5: Solve for x
    x = 285,544,834,403.06/483,458.30
  6. Step 6: Final answer
    x = 590,629.71

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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.