Home / 768,518.69-1,153,176.97-313,443.78

Finding the Fourth Proportional to 768,518.69, 1,153,176.97 and 313,443.78

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Solution

The fourth proportional to 768,518.69, 1,153,176.97 and 313,443.78 is: 470,328.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,518.69 : 1,153,176.97 = 313,443.78 : x
  2. Step 2: Convert to fraction form
    768,518.69/1,153,176.97 = 313,443.78/x
  3. Step 3: Cross multiply
    768,518.69x = 1,153,176.97 × 313,443.78
  4. Step 4: Simplify right side
    768,518.69x = 361,456,147,702.14
  5. Step 5: Solve for x
    x = 361,456,147,702.14/768,518.69
  6. Step 6: Final answer
    x = 470,328.38

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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.