Home / 782,403.07-1,173,604.57-427,223.34

Finding the Fourth Proportional to 782,403.07, 1,173,604.57 and 427,223.34

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Solution

The fourth proportional to 782,403.07, 1,173,604.57 and 427,223.34 is: 640,834.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,403.07 : 1,173,604.57 = 427,223.34 : x
  2. Step 2: Convert to fraction form
    782,403.07/1,173,604.57 = 427,223.34/x
  3. Step 3: Cross multiply
    782,403.07x = 1,173,604.57 × 427,223.34
  4. Step 4: Simplify right side
    782,403.07x = 501,391,264,234.66
  5. Step 5: Solve for x
    x = 501,391,264,234.66/782,403.07
  6. Step 6: Final answer
    x = 640,834.99

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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.