Home / 815,171.70-1,221,651.63-460,010.10

Finding the Fourth Proportional to 815,171.70, 1,221,651.63 and 460,010.10

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Solution

The fourth proportional to 815,171.70, 1,221,651.63 and 460,010.10 is: 689,391.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,171.70 : 1,221,651.63 = 460,010.10 : x
  2. Step 2: Convert to fraction form
    815,171.70/1,221,651.63 = 460,010.10/x
  3. Step 3: Cross multiply
    815,171.70x = 1,221,651.63 × 460,010.10
  4. Step 4: Simplify right side
    815,171.70x = 561,972,088,481.46
  5. Step 5: Solve for x
    x = 561,972,088,481.46/815,171.70
  6. Step 6: Final answer
    x = 689,391.07

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1.5x scale

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.