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Finding the Fourth Proportional to 670,664.88, 925,513.26 and 380,331.48

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Solution

The fourth proportional to 670,664.88, 925,513.26 and 380,331.48 is: 524,855.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,664.88 : 925,513.26 = 380,331.48 : x
  2. Step 2: Convert to fraction form
    670,664.88/925,513.26 = 380,331.48/x
  3. Step 3: Cross multiply
    670,664.88x = 925,513.26 × 380,331.48
  4. Step 4: Simplify right side
    670,664.88x = 352,001,827,935.43
  5. Step 5: Solve for x
    x = 352,001,827,935.43/670,664.88
  6. Step 6: Final answer
    x = 524,855.02

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1.5x scale

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.