Home / 981,405.80-1,354,139.80-573,428.73

Finding the Fourth Proportional to 981,405.80, 1,354,139.80 and 573,428.73

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Solution

The fourth proportional to 981,405.80, 1,354,139.80 and 573,428.73 is: 791,214.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,405.80 : 1,354,139.80 = 573,428.73 : x
  2. Step 2: Convert to fraction form
    981,405.80/1,354,139.80 = 573,428.73/x
  3. Step 3: Cross multiply
    981,405.80x = 1,354,139.80 × 573,428.73
  4. Step 4: Simplify right side
    981,405.80x = 776,502,669,400.91
  5. Step 5: Solve for x
    x = 776,502,669,400.91/981,405.80
  6. Step 6: Final answer
    x = 791,214.67

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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.