Home / 1,290,645.79-1,781,092.67-717,673.66

Finding the Fourth Proportional to 1,290,645.79, 1,781,092.67 and 717,673.66

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Solution

The fourth proportional to 1,290,645.79, 1,781,092.67 and 717,673.66 is: 990,390.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,645.79 : 1,781,092.67 = 717,673.66 : x
  2. Step 2: Convert to fraction form
    1,290,645.79/1,781,092.67 = 717,673.66/x
  3. Step 3: Cross multiply
    1,290,645.79x = 1,781,092.67 × 717,673.66
  4. Step 4: Simplify right side
    1,290,645.79x = 1,278,243,295,278.07
  5. Step 5: Solve for x
    x = 1,278,243,295,278.07/1,290,645.79
  6. Step 6: Final answer
    x = 990,390.47

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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.