Home / 806,397.68-1,112,828.90-438,876.20

Finding the Fourth Proportional to 806,397.68, 1,112,828.90 and 438,876.20

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Solution

The fourth proportional to 806,397.68, 1,112,828.90 and 438,876.20 is: 605,649.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,397.68 : 1,112,828.90 = 438,876.20 : x
  2. Step 2: Convert to fraction form
    806,397.68/1,112,828.90 = 438,876.20/x
  3. Step 3: Cross multiply
    806,397.68x = 1,112,828.90 × 438,876.20
  4. Step 4: Simplify right side
    806,397.68x = 488,394,114,415.23
  5. Step 5: Solve for x
    x = 488,394,114,415.23/806,397.68
  6. Step 6: Final answer
    x = 605,649.21

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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.