Home / 539,511.20-808,748.40-419,501.60

Finding the Fourth Proportional to 539,511.20, 808,748.40 and 419,501.60

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Solution

The fourth proportional to 539,511.20, 808,748.40 and 419,501.60 is: 628,849.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,511.20 : 808,748.40 = 419,501.60 : x
  2. Step 2: Convert to fraction form
    539,511.20/808,748.40 = 419,501.60/x
  3. Step 3: Cross multiply
    539,511.20x = 808,748.40 × 419,501.60
  4. Step 4: Simplify right side
    539,511.20x = 339,271,247,797.44
  5. Step 5: Solve for x
    x = 339,271,247,797.44/539,511.20
  6. Step 6: Final answer
    x = 628,849.31

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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.