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Finding the Fourth Proportional to 554,332.38, 764,978.49 and 299,683.50

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Solution

The fourth proportional to 554,332.38, 764,978.49 and 299,683.50 is: 413,563.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,332.38 : 764,978.49 = 299,683.50 : x
  2. Step 2: Convert to fraction form
    554,332.38/764,978.49 = 299,683.50/x
  3. Step 3: Cross multiply
    554,332.38x = 764,978.49 × 299,683.50
  4. Step 4: Simplify right side
    554,332.38x = 229,251,431,307.92
  5. Step 5: Solve for x
    x = 229,251,431,307.92/554,332.38
  6. Step 6: Final answer
    x = 413,563.12

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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.