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Finding the Fourth Proportional to 554,678.40, 765,730.56 and 350,908.80

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Solution

The fourth proportional to 554,678.40, 765,730.56 and 350,908.80 is: 484,427.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,678.40 : 765,730.56 = 350,908.80 : x
  2. Step 2: Convert to fraction form
    554,678.40/765,730.56 = 350,908.80/x
  3. Step 3: Cross multiply
    554,678.40x = 765,730.56 × 350,908.80
  4. Step 4: Simplify right side
    554,678.40x = 268,701,591,932.93
  5. Step 5: Solve for x
    x = 268,701,591,932.93/554,678.40
  6. Step 6: Final answer
    x = 484,427.72

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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.