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Finding the Fourth Proportional to 560,445.20, 773,431.44 and 318,762.56

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Solution

The fourth proportional to 560,445.20, 773,431.44 and 318,762.56 is: 439,902.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,445.20 : 773,431.44 = 318,762.56 : x
  2. Step 2: Convert to fraction form
    560,445.20/773,431.44 = 318,762.56/x
  3. Step 3: Cross multiply
    560,445.20x = 773,431.44 × 318,762.56
  4. Step 4: Simplify right side
    560,445.20x = 246,540,985,798.89
  5. Step 5: Solve for x
    x = 246,540,985,798.89/560,445.20
  6. Step 6: Final answer
    x = 439,902.04

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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.