Home / 899,279.72-1,349,879.88-387,198.28

Finding the Fourth Proportional to 899,279.72, 1,349,879.88 and 387,198.28

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Solution

The fourth proportional to 899,279.72, 1,349,879.88 and 387,198.28 is: 581,210.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,279.72 : 1,349,879.88 = 387,198.28 : x
  2. Step 2: Convert to fraction form
    899,279.72/1,349,879.88 = 387,198.28/x
  3. Step 3: Cross multiply
    899,279.72x = 1,349,879.88 × 387,198.28
  4. Step 4: Simplify right side
    899,279.72x = 522,671,163,288.88
  5. Step 5: Solve for x
    x = 522,671,163,288.88/899,279.72
  6. Step 6: Final answer
    x = 581,210.89

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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.