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Finding the Fourth Proportional to 554,763.90, 765,595.89 and 325,289.28

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Solution

The fourth proportional to 554,763.90, 765,595.89 and 325,289.28 is: 448,911.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,763.90 : 765,595.89 = 325,289.28 : x
  2. Step 2: Convert to fraction form
    554,763.90/765,595.89 = 325,289.28/x
  3. Step 3: Cross multiply
    554,763.90x = 765,595.89 × 325,289.28
  4. Step 4: Simplify right side
    554,763.90x = 249,040,135,829.06
  5. Step 5: Solve for x
    x = 249,040,135,829.06/554,763.90
  6. Step 6: Final answer
    x = 448,911.94

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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.