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Finding the Fourth Proportional to 670,666.88, 925,516.02 and 380,333.48

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Solution

The fourth proportional to 670,666.88, 925,516.02 and 380,333.48 is: 524,857.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,666.88 : 925,516.02 = 380,333.48 : x
  2. Step 2: Convert to fraction form
    670,666.88/925,516.02 = 380,333.48/x
  3. Step 3: Cross multiply
    670,666.88x = 925,516.02 × 380,333.48
  4. Step 4: Simplify right side
    670,666.88x = 352,004,728,682.35
  5. Step 5: Solve for x
    x = 352,004,728,682.35/670,666.88
  6. Step 6: Final answer
    x = 524,857.78

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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.