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Finding the Fourth Proportional to 560,709.66, 773,752.28 and 318,969.48

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Solution

The fourth proportional to 560,709.66, 773,752.28 and 318,969.48 is: 440,162.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,709.66 : 773,752.28 = 318,969.48 : x
  2. Step 2: Convert to fraction form
    560,709.66/773,752.28 = 318,969.48/x
  3. Step 3: Cross multiply
    560,709.66x = 773,752.28 × 318,969.48
  4. Step 4: Simplify right side
    560,709.66x = 246,803,362,400.41
  5. Step 5: Solve for x
    x = 246,803,362,400.41/560,709.66
  6. Step 6: Final answer
    x = 440,162.49

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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.