Home / 806,397.80-1,112,829.08-438,876.32

Finding the Fourth Proportional to 806,397.80, 1,112,829.08 and 438,876.32

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Solution

The fourth proportional to 806,397.80, 1,112,829.08 and 438,876.32 is: 605,649.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,397.80 : 1,112,829.08 = 438,876.32 : x
  2. Step 2: Convert to fraction form
    806,397.80/1,112,829.08 = 438,876.32/x
  3. Step 3: Cross multiply
    806,397.80x = 1,112,829.08 × 438,876.32
  4. Step 4: Simplify right side
    806,397.80x = 488,394,331,419.39
  5. Step 5: Solve for x
    x = 488,394,331,419.39/806,397.80
  6. Step 6: Final answer
    x = 605,649.38

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1.5x scale

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.