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Finding the Fourth Proportional to 674,472.08, 930,959.16 and 388,084.44

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Solution

The fourth proportional to 674,472.08, 930,959.16 and 388,084.44 is: 535,664.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,472.08 : 930,959.16 = 388,084.44 : x
  2. Step 2: Convert to fraction form
    674,472.08/930,959.16 = 388,084.44/x
  3. Step 3: Cross multiply
    674,472.08x = 930,959.16 × 388,084.44
  4. Step 4: Simplify right side
    674,472.08x = 361,290,764,271.47
  5. Step 5: Solve for x
    x = 361,290,764,271.47/674,472.08
  6. Step 6: Final answer
    x = 535,664.52

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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.