Home / 1,287,262.65-1,930,310.78-488,278.65

Finding the Fourth Proportional to 1,287,262.65, 1,930,310.78 and 488,278.65

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Solution

The fourth proportional to 1,287,262.65, 1,930,310.78 and 488,278.65 is: 732,196.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,262.65 : 1,930,310.78 = 488,278.65 : x
  2. Step 2: Convert to fraction form
    1,287,262.65/1,930,310.78 = 488,278.65/x
  3. Step 3: Cross multiply
    1,287,262.65x = 1,930,310.78 × 488,278.65
  4. Step 4: Simplify right side
    1,287,262.65x = 942,529,539,297.45
  5. Step 5: Solve for x
    x = 942,529,539,297.45/1,287,262.65
  6. Step 6: Final answer
    x = 732,196.76

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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.