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Finding the Fourth Proportional to 521,007.80, 782,313.60 and 284,811.80

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Solution

The fourth proportional to 521,007.80, 782,313.60 and 284,811.80 is: 427,656.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,007.80 : 782,313.60 = 284,811.80 : x
  2. Step 2: Convert to fraction form
    521,007.80/782,313.60 = 284,811.80/x
  3. Step 3: Cross multiply
    521,007.80x = 782,313.60 × 284,811.80
  4. Step 4: Simplify right side
    521,007.80x = 222,812,144,580.48
  5. Step 5: Solve for x
    x = 222,812,144,580.48/521,007.80
  6. Step 6: Final answer
    x = 427,656.06

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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.