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Finding the Fourth Proportional to 554,362.74, 765,020.64 and 299,713.86

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Solution

The fourth proportional to 554,362.74, 765,020.64 and 299,713.86 is: 413,605.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,362.74 : 765,020.64 = 299,713.86 : x
  2. Step 2: Convert to fraction form
    554,362.74/765,020.64 = 299,713.86/x
  3. Step 3: Cross multiply
    554,362.74x = 765,020.64 × 299,713.86
  4. Step 4: Simplify right side
    554,362.74x = 229,287,288,994.07
  5. Step 5: Solve for x
    x = 229,287,288,994.07/554,362.74
  6. Step 6: Final answer
    x = 413,605.16

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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.