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Finding the Fourth Proportional to 438,135.32, 604,078.89 and 365,642.48

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Solution

The fourth proportional to 438,135.32, 604,078.89 and 365,642.48 is: 504,129.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,135.32 : 604,078.89 = 365,642.48 : x
  2. Step 2: Convert to fraction form
    438,135.32/604,078.89 = 365,642.48/x
  3. Step 3: Cross multiply
    438,135.32x = 604,078.89 × 365,642.48
  4. Step 4: Simplify right side
    438,135.32x = 220,876,903,455.25
  5. Step 5: Solve for x
    x = 220,876,903,455.25/438,135.32
  6. Step 6: Final answer
    x = 504,129.42

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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.