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Finding the Fourth Proportional to 432,580.69, 648,870.90 and 315,000.28

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Solution

The fourth proportional to 432,580.69, 648,870.90 and 315,000.28 is: 472,500.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,580.69 : 648,870.90 = 315,000.28 : x
  2. Step 2: Convert to fraction form
    432,580.69/648,870.90 = 315,000.28/x
  3. Step 3: Cross multiply
    432,580.69x = 648,870.90 × 315,000.28
  4. Step 4: Simplify right side
    432,580.69x = 204,394,515,183.85
  5. Step 5: Solve for x
    x = 204,394,515,183.85/432,580.69
  6. Step 6: Final answer
    x = 472,500.32

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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.