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Finding the Fourth Proportional to 603,072.16, 832,069.74 and 388,336.48

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Solution

The fourth proportional to 603,072.16, 832,069.74 and 388,336.48 is: 535,794.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,072.16 : 832,069.74 = 388,336.48 : x
  2. Step 2: Convert to fraction form
    603,072.16/832,069.74 = 388,336.48/x
  3. Step 3: Cross multiply
    603,072.16x = 832,069.74 × 388,336.48
  4. Step 4: Simplify right side
    603,072.16x = 323,123,033,946.12
  5. Step 5: Solve for x
    x = 323,123,033,946.12/603,072.16
  6. Step 6: Final answer
    x = 535,794.98

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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.