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Finding the Fourth Proportional to 670,337.26, 925,363.62 and 398,493.16

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Solution

The fourth proportional to 670,337.26, 925,363.62 and 398,493.16 is: 550,097.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,337.26 : 925,363.62 = 398,493.16 : x
  2. Step 2: Convert to fraction form
    670,337.26/925,363.62 = 398,493.16/x
  3. Step 3: Cross multiply
    670,337.26x = 925,363.62 × 398,493.16
  4. Step 4: Simplify right side
    670,337.26x = 368,751,071,090.37
  5. Step 5: Solve for x
    x = 368,751,071,090.37/670,337.26
  6. Step 6: Final answer
    x = 550,097.83

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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.