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Finding the Fourth Proportional to 702,689.45, 969,711.24 and 380,399.31

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Solution

The fourth proportional to 702,689.45, 969,711.24 and 380,399.31 is: 524,950.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,689.45 : 969,711.24 = 380,399.31 : x
  2. Step 2: Convert to fraction form
    702,689.45/969,711.24 = 380,399.31/x
  3. Step 3: Cross multiply
    702,689.45x = 969,711.24 × 380,399.31
  4. Step 4: Simplify right side
    702,689.45x = 368,877,486,595.24
  5. Step 5: Solve for x
    x = 368,877,486,595.24/702,689.45
  6. Step 6: Final answer
    x = 524,950.94

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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.