Home / 815,873.40-1,221,390.90-606,439.80

Finding the Fourth Proportional to 815,873.40, 1,221,390.90 and 606,439.80

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Solution

The fourth proportional to 815,873.40, 1,221,390.90 and 606,439.80 is: 907,861.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,873.40 : 1,221,390.90 = 606,439.80 : x
  2. Step 2: Convert to fraction form
    815,873.40/1,221,390.90 = 606,439.80/x
  3. Step 3: Cross multiply
    815,873.40x = 1,221,390.90 × 606,439.80
  4. Step 4: Simplify right side
    815,873.40x = 740,700,053,117.82
  5. Step 5: Solve for x
    x = 740,700,053,117.82/815,873.40
  6. Step 6: Final answer
    x = 907,861.51

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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.