Home / 778,217.63-1,073,956.73-438,685.88

Finding the Fourth Proportional to 778,217.63, 1,073,956.73 and 438,685.88

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Solution

The fourth proportional to 778,217.63, 1,073,956.73 and 438,685.88 is: 605,395.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,217.63 : 1,073,956.73 = 438,685.88 : x
  2. Step 2: Convert to fraction form
    778,217.63/1,073,956.73 = 438,685.88/x
  3. Step 3: Cross multiply
    778,217.63x = 1,073,956.73 × 438,685.88
  4. Step 4: Simplify right side
    778,217.63x = 471,129,645,618.76
  5. Step 5: Solve for x
    x = 471,129,645,618.76/778,217.63
  6. Step 6: Final answer
    x = 605,395.75

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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.