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Finding the Fourth Proportional to 539,800.60, 809,312.10 and 303,215.80

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Solution

The fourth proportional to 539,800.60, 809,312.10 and 303,215.80 is: 454,605.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,800.60 : 809,312.10 = 303,215.80 : x
  2. Step 2: Convert to fraction form
    539,800.60/809,312.10 = 303,215.80/x
  3. Step 3: Cross multiply
    539,800.60x = 809,312.10 × 303,215.80
  4. Step 4: Simplify right side
    539,800.60x = 245,396,215,851.18
  5. Step 5: Solve for x
    x = 245,396,215,851.18/539,800.60
  6. Step 6: Final answer
    x = 454,605.30

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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.