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Finding the Fourth Proportional to 573,448.12, 791,313.58 and 318,783.80

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Solution

The fourth proportional to 573,448.12, 791,313.58 and 318,783.80 is: 439,896.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,448.12 : 791,313.58 = 318,783.80 : x
  2. Step 2: Convert to fraction form
    573,448.12/791,313.58 = 318,783.80/x
  3. Step 3: Cross multiply
    573,448.12x = 791,313.58 × 318,783.80
  4. Step 4: Simplify right side
    573,448.12x = 252,257,950,024.00
  5. Step 5: Solve for x
    x = 252,257,950,024.00/573,448.12
  6. Step 6: Final answer
    x = 439,896.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.