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Finding the Fourth Proportional to 554,997.90, 765,897.11 and 300,349.10

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Solution

The fourth proportional to 554,997.90, 765,897.11 and 300,349.10 is: 414,481.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,997.90 : 765,897.11 = 300,349.10 : x
  2. Step 2: Convert to fraction form
    554,997.90/765,897.11 = 300,349.10/x
  3. Step 3: Cross multiply
    554,997.90x = 765,897.11 × 300,349.10
  4. Step 4: Simplify right side
    554,997.90x = 230,036,502,349.87
  5. Step 5: Solve for x
    x = 230,036,502,349.87/554,997.90
  6. Step 6: Final answer
    x = 414,481.75

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1.5x scale

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.