Home / 809,212.80-1,214,159.40-434,798.40

Finding the Fourth Proportional to 809,212.80, 1,214,159.40 and 434,798.40

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Solution

The fourth proportional to 809,212.80, 1,214,159.40 and 434,798.40 is: 652,380.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,212.80 : 1,214,159.40 = 434,798.40 : x
  2. Step 2: Convert to fraction form
    809,212.80/1,214,159.40 = 434,798.40/x
  3. Step 3: Cross multiply
    809,212.80x = 1,214,159.40 × 434,798.40
  4. Step 4: Simplify right side
    809,212.80x = 527,914,564,464.96
  5. Step 5: Solve for x
    x = 527,914,564,464.96/809,212.80
  6. Step 6: Final answer
    x = 652,380.39

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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.