Home / 781,246.80-1,171,908.60-407,998.80

Finding the Fourth Proportional to 781,246.80, 1,171,908.60 and 407,998.80

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Solution

The fourth proportional to 781,246.80, 1,171,908.60 and 407,998.80 is: 612,018.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,246.80 : 1,171,908.60 = 407,998.80 : x
  2. Step 2: Convert to fraction form
    781,246.80/1,171,908.60 = 407,998.80/x
  3. Step 3: Cross multiply
    781,246.80x = 1,171,908.60 × 407,998.80
  4. Step 4: Simplify right side
    781,246.80x = 478,137,302,509.68
  5. Step 5: Solve for x
    x = 478,137,302,509.68/781,246.80
  6. Step 6: Final answer
    x = 612,018.25

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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.