Home / 493,769.40-681,443.73-278,948.90

Finding the Fourth Proportional to 493,769.40, 681,443.73 and 278,948.90

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Solution

The fourth proportional to 493,769.40, 681,443.73 and 278,948.90 is: 384,973.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,769.40 : 681,443.73 = 278,948.90 : x
  2. Step 2: Convert to fraction form
    493,769.40/681,443.73 = 278,948.90/x
  3. Step 3: Cross multiply
    493,769.40x = 681,443.73 × 278,948.90
  4. Step 4: Simplify right side
    493,769.40x = 190,087,978,895.40
  5. Step 5: Solve for x
    x = 190,087,978,895.40/493,769.40
  6. Step 6: Final answer
    x = 384,973.19

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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.