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Finding the Fourth Proportional to 670,699.44, 925,170.30 and 421,945.07

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Solution

The fourth proportional to 670,699.44, 925,170.30 and 421,945.07 is: 582,035.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,699.44 : 925,170.30 = 421,945.07 : x
  2. Step 2: Convert to fraction form
    670,699.44/925,170.30 = 421,945.07/x
  3. Step 3: Cross multiply
    670,699.44x = 925,170.30 × 421,945.07
  4. Step 4: Simplify right side
    670,699.44x = 390,371,042,369.57
  5. Step 5: Solve for x
    x = 390,371,042,369.57/670,699.44
  6. Step 6: Final answer
    x = 582,035.74

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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.