Home / 808,109.28-1,115,139.42-445,513.32

Finding the Fourth Proportional to 808,109.28, 1,115,139.42 and 445,513.32

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Solution

The fourth proportional to 808,109.28, 1,115,139.42 and 445,513.32 is: 614,780.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,109.28 : 1,115,139.42 = 445,513.32 : x
  2. Step 2: Convert to fraction form
    808,109.28/1,115,139.42 = 445,513.32/x
  3. Step 3: Cross multiply
    808,109.28x = 1,115,139.42 × 445,513.32
  4. Step 4: Simplify right side
    808,109.28x = 496,809,465,267.07
  5. Step 5: Solve for x
    x = 496,809,465,267.07/808,109.28
  6. Step 6: Final answer
    x = 614,780.05

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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.