Home / 1,115,042.88-1,538,635.75-618,314.28

Finding the Fourth Proportional to 1,115,042.88, 1,538,635.75 and 618,314.28

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Solution

The fourth proportional to 1,115,042.88, 1,538,635.75 and 618,314.28 is: 853,205.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,042.88 : 1,538,635.75 = 618,314.28 : x
  2. Step 2: Convert to fraction form
    1,115,042.88/1,538,635.75 = 618,314.28/x
  3. Step 3: Cross multiply
    1,115,042.88x = 1,538,635.75 × 618,314.28
  4. Step 4: Simplify right side
    1,115,042.88x = 951,360,455,943.51
  5. Step 5: Solve for x
    x = 951,360,455,943.51/1,115,042.88
  6. Step 6: Final answer
    x = 853,205.27

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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.