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Finding the Fourth Proportional to 554,657.42, 765,426.92 and 300,008.61

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Solution

The fourth proportional to 554,657.42, 765,426.92 and 300,008.61 is: 414,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,657.42 : 765,426.92 = 300,008.61 : x
  2. Step 2: Convert to fraction form
    554,657.42/765,426.92 = 300,008.61/x
  3. Step 3: Cross multiply
    554,657.42x = 765,426.92 × 300,008.61
  4. Step 4: Simplify right side
    554,657.42x = 229,634,664,825.74
  5. Step 5: Solve for x
    x = 229,634,664,825.74/554,657.42
  6. Step 6: Final answer
    x = 414,011.70

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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.