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Finding the Fourth Proportional to 538,551.86, 808,877.55 and 438,785.78

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Solution

The fourth proportional to 538,551.86, 808,877.55 and 438,785.78 is: 659,033.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,551.86 : 808,877.55 = 438,785.78 : x
  2. Step 2: Convert to fraction form
    538,551.86/808,877.55 = 438,785.78/x
  3. Step 3: Cross multiply
    538,551.86x = 808,877.55 × 438,785.78
  4. Step 4: Simplify right side
    538,551.86x = 354,923,966,701.24
  5. Step 5: Solve for x
    x = 354,923,966,701.24/538,551.86
  6. Step 6: Final answer
    x = 659,033.96

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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.