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Finding the Fourth Proportional to 480,693.72, 663,415.02 and 279,489.72

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Solution

The fourth proportional to 480,693.72, 663,415.02 and 279,489.72 is: 385,729.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,693.72 : 663,415.02 = 279,489.72 : x
  2. Step 2: Convert to fraction form
    480,693.72/663,415.02 = 279,489.72/x
  3. Step 3: Cross multiply
    480,693.72x = 663,415.02 × 279,489.72
  4. Step 4: Simplify right side
    480,693.72x = 185,417,678,183.59
  5. Step 5: Solve for x
    x = 185,417,678,183.59/480,693.72
  6. Step 6: Final answer
    x = 385,729.35

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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.