Home / 1,259,969.76-1,890,319.68-407,171.52

Finding the Fourth Proportional to 1,259,969.76, 1,890,319.68 and 407,171.52

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Solution

The fourth proportional to 1,259,969.76, 1,890,319.68 and 407,171.52 is: 610,875.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,969.76 : 1,890,319.68 = 407,171.52 : x
  2. Step 2: Convert to fraction form
    1,259,969.76/1,890,319.68 = 407,171.52/x
  3. Step 3: Cross multiply
    1,259,969.76x = 1,890,319.68 × 407,171.52
  4. Step 4: Simplify right side
    1,259,969.76x = 769,684,337,391.51
  5. Step 5: Solve for x
    x = 769,684,337,391.51/1,259,969.76
  6. Step 6: Final answer
    x = 610,875.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.