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Finding the Fourth Proportional to 554,369.34, 764,983.86 and 312,711.30

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Solution

The fourth proportional to 554,369.34, 764,983.86 and 312,711.30 is: 431,515.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,369.34 : 764,983.86 = 312,711.30 : x
  2. Step 2: Convert to fraction form
    554,369.34/764,983.86 = 312,711.30/x
  3. Step 3: Cross multiply
    554,369.34x = 764,983.86 × 312,711.30
  4. Step 4: Simplify right side
    554,369.34x = 239,219,097,339.62
  5. Step 5: Solve for x
    x = 239,219,097,339.62/554,369.34
  6. Step 6: Final answer
    x = 431,515.74

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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.