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Finding the Fourth Proportional to 560,138.56, 773,057.64 and 318,457.60

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Solution

The fourth proportional to 560,138.56, 773,057.64 and 318,457.60 is: 439,509.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,138.56 : 773,057.64 = 318,457.60 : x
  2. Step 2: Convert to fraction form
    560,138.56/773,057.64 = 318,457.60/x
  3. Step 3: Cross multiply
    560,138.56x = 773,057.64 × 318,457.60
  4. Step 4: Simplify right side
    560,138.56x = 246,186,080,696.06
  5. Step 5: Solve for x
    x = 246,186,080,696.06/560,138.56
  6. Step 6: Final answer
    x = 439,509.25

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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.