Home / 539,784.12-809,677.20-140,424.26

Finding the Fourth Proportional to 539,784.12, 809,677.20 and 140,424.26

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Solution

The fourth proportional to 539,784.12, 809,677.20 and 140,424.26 is: 210,636.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,784.12 : 809,677.20 = 140,424.26 : x
  2. Step 2: Convert to fraction form
    539,784.12/809,677.20 = 140,424.26/x
  3. Step 3: Cross multiply
    539,784.12x = 809,677.20 × 140,424.26
  4. Step 4: Simplify right side
    539,784.12x = 113,698,317,600.49
  5. Step 5: Solve for x
    x = 113,698,317,600.49/539,784.12
  6. Step 6: Final answer
    x = 210,636.65

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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.