Home / 1,296,931.20-1,945,688.40-398,414.40

Finding the Fourth Proportional to 1,296,931.20, 1,945,688.40 and 398,414.40

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Solution

The fourth proportional to 1,296,931.20, 1,945,688.40 and 398,414.40 is: 597,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,931.20 : 1,945,688.40 = 398,414.40 : x
  2. Step 2: Convert to fraction form
    1,296,931.20/1,945,688.40 = 398,414.40/x
  3. Step 3: Cross multiply
    1,296,931.20x = 1,945,688.40 × 398,414.40
  4. Step 4: Simplify right side
    1,296,931.20x = 775,190,276,472.96
  5. Step 5: Solve for x
    x = 775,190,276,472.96/1,296,931.20
  6. Step 6: Final answer
    x = 597,711.18

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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.