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Finding the Fourth Proportional to 670,822.56, 925,730.10 and 380,489.40

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Solution

The fourth proportional to 670,822.56, 925,730.10 and 380,489.40 is: 525,072.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,822.56 : 925,730.10 = 380,489.40 : x
  2. Step 2: Convert to fraction form
    670,822.56/925,730.10 = 380,489.40/x
  3. Step 3: Cross multiply
    670,822.56x = 925,730.10 × 380,489.40
  4. Step 4: Simplify right side
    670,822.56x = 352,230,490,310.94
  5. Step 5: Solve for x
    x = 352,230,490,310.94/670,822.56
  6. Step 6: Final answer
    x = 525,072.52

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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.