Home / 1,288,895.10-1,778,648.67-715,922.70

Finding the Fourth Proportional to 1,288,895.10, 1,778,648.67 and 715,922.70

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Solution

The fourth proportional to 1,288,895.10, 1,778,648.67 and 715,922.70 is: 987,958.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,895.10 : 1,778,648.67 = 715,922.70 : x
  2. Step 2: Convert to fraction form
    1,288,895.10/1,778,648.67 = 715,922.70/x
  3. Step 3: Cross multiply
    1,288,895.10x = 1,778,648.67 × 715,922.70
  4. Step 4: Simplify right side
    1,288,895.10x = 1,273,374,958,177.81
  5. Step 5: Solve for x
    x = 1,273,374,958,177.81/1,288,895.10
  6. Step 6: Final answer
    x = 987,958.57

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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.