Home / 699,037.36-964,662.38-393,113.64

Finding the Fourth Proportional to 699,037.36, 964,662.38 and 393,113.64

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Solution

The fourth proportional to 699,037.36, 964,662.38 and 393,113.64 is: 542,491.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,037.36 : 964,662.38 = 393,113.64 : x
  2. Step 2: Convert to fraction form
    699,037.36/964,662.38 = 393,113.64/x
  3. Step 3: Cross multiply
    699,037.36x = 964,662.38 × 393,113.64
  4. Step 4: Simplify right side
    699,037.36x = 379,221,939,572.86
  5. Step 5: Solve for x
    x = 379,221,939,572.86/699,037.36
  6. Step 6: Final answer
    x = 542,491.66

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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.