Home / 1,379,750-2,069,958.20-433,120.72

Finding the Fourth Proportional to 1,379,750, 2,069,958.20 and 433,120.72

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Solution

The fourth proportional to 1,379,750, 2,069,958.20 and 433,120.72 is: 649,785.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,750 : 2,069,958.20 = 433,120.72 : x
  2. Step 2: Convert to fraction form
    1,379,750/2,069,958.20 = 433,120.72/x
  3. Step 3: Cross multiply
    1,379,750x = 2,069,958.20 × 433,120.72
  4. Step 4: Simplify right side
    1,379,750x = 896,541,785,953.90
  5. Step 5: Solve for x
    x = 896,541,785,953.90/1,379,750
  6. Step 6: Final answer
    x = 649,785.68

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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.