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Finding the Fourth Proportional to 554,787.28, 765,626.08 and 313,055.76

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Solution

The fourth proportional to 554,787.28, 765,626.08 and 313,055.76 is: 432,028.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,787.28 : 765,626.08 = 313,055.76 : x
  2. Step 2: Convert to fraction form
    554,787.28/765,626.08 = 313,055.76/x
  3. Step 3: Cross multiply
    554,787.28x = 765,626.08 × 313,055.76
  4. Step 4: Simplify right side
    554,787.28x = 239,683,654,350.22
  5. Step 5: Solve for x
    x = 239,683,654,350.22/554,787.28
  6. Step 6: Final answer
    x = 432,028.03

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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.