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Finding the Fourth Proportional to 538,559.36, 808,888.80 and 438,793.28

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Solution

The fourth proportional to 538,559.36, 808,888.80 and 438,793.28 is: 659,045.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,559.36 : 808,888.80 = 438,793.28 : x
  2. Step 2: Convert to fraction form
    538,559.36/808,888.80 = 438,793.28/x
  3. Step 3: Cross multiply
    538,559.36x = 808,888.80 × 438,793.28
  4. Step 4: Simplify right side
    538,559.36x = 354,934,969,707.26
  5. Step 5: Solve for x
    x = 354,934,969,707.26/538,559.36
  6. Step 6: Final answer
    x = 659,045.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.