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Finding the Fourth Proportional to 675,904.70, 932,730 and 385,509.72

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Solution

The fourth proportional to 675,904.70, 932,730 and 385,509.72 is: 531,992.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,904.70 : 932,730 = 385,509.72 : x
  2. Step 2: Convert to fraction form
    675,904.70/932,730 = 385,509.72/x
  3. Step 3: Cross multiply
    675,904.70x = 932,730 × 385,509.72
  4. Step 4: Simplify right side
    675,904.70x = 359,576,481,135.60
  5. Step 5: Solve for x
    x = 359,576,481,135.60/675,904.70
  6. Step 6: Final answer
    x = 531,992.87

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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.