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Finding the Fourth Proportional to 554,628.03, 765,386.01 and 299,978.61

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Solution

The fourth proportional to 554,628.03, 765,386.01 and 299,978.61 is: 413,970.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,628.03 : 765,386.01 = 299,978.61 : x
  2. Step 2: Convert to fraction form
    554,628.03/765,386.01 = 299,978.61/x
  3. Step 3: Cross multiply
    554,628.03x = 765,386.01 × 299,978.61
  4. Step 4: Simplify right side
    554,628.03x = 229,599,431,393.25
  5. Step 5: Solve for x
    x = 229,599,431,393.25/554,628.03
  6. Step 6: Final answer
    x = 413,970.12

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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.