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Finding the Fourth Proportional to 439,802.93, 606,993.30 and 278,673.06

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Solution

The fourth proportional to 439,802.93, 606,993.30 and 278,673.06 is: 384,610.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,802.93 : 606,993.30 = 278,673.06 : x
  2. Step 2: Convert to fraction form
    439,802.93/606,993.30 = 278,673.06/x
  3. Step 3: Cross multiply
    439,802.93x = 606,993.30 × 278,673.06
  4. Step 4: Simplify right side
    439,802.93x = 169,152,680,310.50
  5. Step 5: Solve for x
    x = 169,152,680,310.50/439,802.93
  6. Step 6: Final answer
    x = 384,610.18

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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.