Home / 1,288,568.88-1,778,176.32-715,645.96

Finding the Fourth Proportional to 1,288,568.88, 1,778,176.32 and 715,645.96

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Solution

The fourth proportional to 1,288,568.88, 1,778,176.32 and 715,645.96 is: 987,564.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,568.88 : 1,778,176.32 = 715,645.96 : x
  2. Step 2: Convert to fraction form
    1,288,568.88/1,778,176.32 = 715,645.96/x
  3. Step 3: Cross multiply
    1,288,568.88x = 1,778,176.32 × 715,645.96
  4. Step 4: Simplify right side
    1,288,568.88x = 1,272,544,699,575.67
  5. Step 5: Solve for x
    x = 1,272,544,699,575.67/1,288,568.88
  6. Step 6: Final answer
    x = 987,564.36

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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.