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Finding the Fourth Proportional to 554,679.40, 765,731.94 and 350,909.80

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Solution

The fourth proportional to 554,679.40, 765,731.94 and 350,909.80 is: 484,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,679.40 : 765,731.94 = 350,909.80 : x
  2. Step 2: Convert to fraction form
    554,679.40/765,731.94 = 350,909.80/x
  3. Step 3: Cross multiply
    554,679.40x = 765,731.94 × 350,909.80
  4. Step 4: Simplify right side
    554,679.40x = 268,702,841,919.01
  5. Step 5: Solve for x
    x = 268,702,841,919.01/554,679.40
  6. Step 6: Final answer
    x = 484,429.10

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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.