Home / 857,279.70-1,183,118.40-475,429.50

Finding the Fourth Proportional to 857,279.70, 1,183,118.40 and 475,429.50

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Solution

The fourth proportional to 857,279.70, 1,183,118.40 and 475,429.50 is: 656,132.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,279.70 : 1,183,118.40 = 475,429.50 : x
  2. Step 2: Convert to fraction form
    857,279.70/1,183,118.40 = 475,429.50/x
  3. Step 3: Cross multiply
    857,279.70x = 1,183,118.40 × 475,429.50
  4. Step 4: Simplify right side
    857,279.70x = 562,489,389,352.80
  5. Step 5: Solve for x
    x = 562,489,389,352.80/857,279.70
  6. Step 6: Final answer
    x = 656,132.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.