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Finding the Fourth Proportional to 670,604.16, 925,453.12 and 368,817.60

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Solution

The fourth proportional to 670,604.16, 925,453.12 and 368,817.60 is: 508,978.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,604.16 : 925,453.12 = 368,817.60 : x
  2. Step 2: Convert to fraction form
    670,604.16/925,453.12 = 368,817.60/x
  3. Step 3: Cross multiply
    670,604.16x = 925,453.12 × 368,817.60
  4. Step 4: Simplify right side
    670,604.16x = 341,323,398,630.91
  5. Step 5: Solve for x
    x = 341,323,398,630.91/670,604.16
  6. Step 6: Final answer
    x = 508,978.95

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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.