Home / 763,121.70-1,145,200.95-426,161.70

Finding the Fourth Proportional to 763,121.70, 1,145,200.95 and 426,161.70

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Solution

The fourth proportional to 763,121.70, 1,145,200.95 and 426,161.70 is: 639,532.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,121.70 : 1,145,200.95 = 426,161.70 : x
  2. Step 2: Convert to fraction form
    763,121.70/1,145,200.95 = 426,161.70/x
  3. Step 3: Cross multiply
    763,121.70x = 1,145,200.95 × 426,161.70
  4. Step 4: Simplify right side
    763,121.70x = 488,040,783,693.62
  5. Step 5: Solve for x
    x = 488,040,783,693.62/763,121.70
  6. Step 6: Final answer
    x = 639,532.05

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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.