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Finding the Fourth Proportional to 432,046.40, 648,847.20 and 313,851.20

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Solution

The fourth proportional to 432,046.40, 648,847.20 and 313,851.20 is: 471,341.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,046.40 : 648,847.20 = 313,851.20 : x
  2. Step 2: Convert to fraction form
    432,046.40/648,847.20 = 313,851.20/x
  3. Step 3: Cross multiply
    432,046.40x = 648,847.20 × 313,851.20
  4. Step 4: Simplify right side
    432,046.40x = 203,641,472,336.64
  5. Step 5: Solve for x
    x = 203,641,472,336.64/432,046.40
  6. Step 6: Final answer
    x = 471,341.67

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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.