Home / 812,906.44-1,221,565.80-434,090.68

Finding the Fourth Proportional to 812,906.44, 1,221,565.80 and 434,090.68

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Solution

The fourth proportional to 812,906.44, 1,221,565.80 and 434,090.68 is: 652,314.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,906.44 : 1,221,565.80 = 434,090.68 : x
  2. Step 2: Convert to fraction form
    812,906.44/1,221,565.80 = 434,090.68/x
  3. Step 3: Cross multiply
    812,906.44x = 1,221,565.80 × 434,090.68
  4. Step 4: Simplify right side
    812,906.44x = 530,270,328,786.74
  5. Step 5: Solve for x
    x = 530,270,328,786.74/812,906.44
  6. Step 6: Final answer
    x = 652,314.10

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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.