Home / 1,290,970.80-1,781,415-746,998.29

Finding the Fourth Proportional to 1,290,970.80, 1,781,415 and 746,998.29

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Solution

The fourth proportional to 1,290,970.80, 1,781,415 and 746,998.29 is: 1,030,785.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,970.80 : 1,781,415 = 746,998.29 : x
  2. Step 2: Convert to fraction form
    1,290,970.80/1,781,415 = 746,998.29/x
  3. Step 3: Cross multiply
    1,290,970.80x = 1,781,415 × 746,998.29
  4. Step 4: Simplify right side
    1,290,970.80x = 1,330,713,958,780.35
  5. Step 5: Solve for x
    x = 1,330,713,958,780.35/1,290,970.80
  6. Step 6: Final answer
    x = 1,030,785.48

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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.