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Finding the Fourth Proportional to 483,176.80, 724,765.20 and 430,032.70

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Solution

The fourth proportional to 483,176.80, 724,765.20 and 430,032.70 is: 645,049.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,176.80 : 724,765.20 = 430,032.70 : x
  2. Step 2: Convert to fraction form
    483,176.80/724,765.20 = 430,032.70/x
  3. Step 3: Cross multiply
    483,176.80x = 724,765.20 × 430,032.70
  4. Step 4: Simplify right side
    483,176.80x = 311,672,735,822.04
  5. Step 5: Solve for x
    x = 311,672,735,822.04/483,176.80
  6. Step 6: Final answer
    x = 645,049.05

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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.