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Finding the Fourth Proportional to 520,450.13, 778,516.20 and 488,563.67

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Solution

The fourth proportional to 520,450.13, 778,516.20 and 488,563.67 is: 730,818.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,450.13 : 778,516.20 = 488,563.67 : x
  2. Step 2: Convert to fraction form
    520,450.13/778,516.20 = 488,563.67/x
  3. Step 3: Cross multiply
    520,450.13x = 778,516.20 × 488,563.67
  4. Step 4: Simplify right side
    520,450.13x = 380,354,729,393.59
  5. Step 5: Solve for x
    x = 380,354,729,393.59/520,450.13
  6. Step 6: Final answer
    x = 730,818.79

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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.