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Finding the Fourth Proportional to 591,994.59, 817,027.35 and 388,216.95

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Solution

The fourth proportional to 591,994.59, 817,027.35 and 388,216.95 is: 535,788.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,994.59 : 817,027.35 = 388,216.95 : x
  2. Step 2: Convert to fraction form
    591,994.59/817,027.35 = 388,216.95/x
  3. Step 3: Cross multiply
    591,994.59x = 817,027.35 × 388,216.95
  4. Step 4: Simplify right side
    591,994.59x = 317,183,865,883.58
  5. Step 5: Solve for x
    x = 317,183,865,883.58/591,994.59
  6. Step 6: Final answer
    x = 535,788.45

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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.