Home / 809,113.80-1,214,010.90-434,699.40

Finding the Fourth Proportional to 809,113.80, 1,214,010.90 and 434,699.40

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Solution

The fourth proportional to 809,113.80, 1,214,010.90 and 434,699.40 is: 652,231.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,113.80 : 1,214,010.90 = 434,699.40 : x
  2. Step 2: Convert to fraction form
    809,113.80/1,214,010.90 = 434,699.40/x
  3. Step 3: Cross multiply
    809,113.80x = 1,214,010.90 × 434,699.40
  4. Step 4: Simplify right side
    809,113.80x = 527,729,809,823.46
  5. Step 5: Solve for x
    x = 527,729,809,823.46/809,113.80
  6. Step 6: Final answer
    x = 652,231.87

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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.