Home / 783,514.62-1,175,604.00-428,113.45

Finding the Fourth Proportional to 783,514.62, 1,175,604.00 and 428,113.45

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Solution

The fourth proportional to 783,514.62, 1,175,604.00 and 428,113.45 is: 642,351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,514.62 : 1,175,604.00 = 428,113.45 : x
  2. Step 2: Convert to fraction form
    783,514.62/1,175,604.00 = 428,113.45/x
  3. Step 3: Cross multiply
    783,514.62x = 1,175,604.00 × 428,113.45
  4. Step 4: Simplify right side
    783,514.62x = 503,291,887,750.09
  5. Step 5: Solve for x
    x = 503,291,887,750.09/783,514.62
  6. Step 6: Final answer
    x = 642,351.62

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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.