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Finding the Fourth Proportional to 670,346.61, 925,074.45 and 380,012.96

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Solution

The fourth proportional to 670,346.61, 925,074.45 and 380,012.96 is: 524,415.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,346.61 : 925,074.45 = 380,012.96 : x
  2. Step 2: Convert to fraction form
    670,346.61/925,074.45 = 380,012.96/x
  3. Step 3: Cross multiply
    670,346.61x = 925,074.45 × 380,012.96
  4. Step 4: Simplify right side
    670,346.61x = 351,540,275,339.50
  5. Step 5: Solve for x
    x = 351,540,275,339.50/670,346.61
  6. Step 6: Final answer
    x = 524,415.68

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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.