Home / 699,013.71-964,526.39-393,071.85

Finding the Fourth Proportional to 699,013.71, 964,526.39 and 393,071.85

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Solution

The fourth proportional to 699,013.71, 964,526.39 and 393,071.85 is: 542,375.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,013.71 : 964,526.39 = 393,071.85 : x
  2. Step 2: Convert to fraction form
    699,013.71/964,526.39 = 393,071.85/x
  3. Step 3: Cross multiply
    699,013.71x = 964,526.39 × 393,071.85
  4. Step 4: Simplify right side
    699,013.71x = 379,128,172,491.12
  5. Step 5: Solve for x
    x = 379,128,172,491.12/699,013.71
  6. Step 6: Final answer
    x = 542,375.87

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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.