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Finding the Fourth Proportional to 554,989.36, 765,890.72 and 300,345.84

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Solution

The fourth proportional to 554,989.36, 765,890.72 and 300,345.84 is: 414,480.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,989.36 : 765,890.72 = 300,345.84 : x
  2. Step 2: Convert to fraction form
    554,989.36/765,890.72 = 300,345.84/x
  3. Step 3: Cross multiply
    554,989.36x = 765,890.72 × 300,345.84
  4. Step 4: Simplify right side
    554,989.36x = 230,032,091,646.61
  5. Step 5: Solve for x
    x = 230,032,091,646.61/554,989.36
  6. Step 6: Final answer
    x = 414,480.18

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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.