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Finding the Fourth Proportional to 545,323.28, 752,492.52 and 318,924.56

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Solution

The fourth proportional to 545,323.28, 752,492.52 and 318,924.56 is: 440,084.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,323.28 : 752,492.52 = 318,924.56 : x
  2. Step 2: Convert to fraction form
    545,323.28/752,492.52 = 318,924.56/x
  3. Step 3: Cross multiply
    545,323.28x = 752,492.52 × 318,924.56
  4. Step 4: Simplify right side
    545,323.28x = 239,988,345,844.29
  5. Step 5: Solve for x
    x = 239,988,345,844.29/545,323.28
  6. Step 6: Final answer
    x = 440,084.54

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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.