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Finding the Fourth Proportional to 560,399.44, 773,319.54 and 318,740.80

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Solution

The fourth proportional to 560,399.44, 773,319.54 and 318,740.80 is: 439,844.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,399.44 : 773,319.54 = 318,740.80 : x
  2. Step 2: Convert to fraction form
    560,399.44/773,319.54 = 318,740.80/x
  3. Step 3: Cross multiply
    560,399.44x = 773,319.54 × 318,740.80
  4. Step 4: Simplify right side
    560,399.44x = 246,488,488,835.23
  5. Step 5: Solve for x
    x = 246,488,488,835.23/560,399.44
  6. Step 6: Final answer
    x = 439,844.28

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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.