Home / 819,301.23-1,228,686.03-313,835.31

Finding the Fourth Proportional to 819,301.23, 1,228,686.03 and 313,835.31

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Solution

The fourth proportional to 819,301.23, 1,228,686.03 and 313,835.31 is: 470,651.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,301.23 : 1,228,686.03 = 313,835.31 : x
  2. Step 2: Convert to fraction form
    819,301.23/1,228,686.03 = 313,835.31/x
  3. Step 3: Cross multiply
    819,301.23x = 1,228,686.03 × 313,835.31
  4. Step 4: Simplify right side
    819,301.23x = 385,605,061,117.72
  5. Step 5: Solve for x
    x = 385,605,061,117.72/819,301.23
  6. Step 6: Final answer
    x = 470,651.14

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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.