Home / 1,086,640.90-1,629,961.35-288,045.70

Finding the Fourth Proportional to 1,086,640.90, 1,629,961.35 and 288,045.70

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Solution

The fourth proportional to 1,086,640.90, 1,629,961.35 and 288,045.70 is: 432,068.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,640.90 : 1,629,961.35 = 288,045.70 : x
  2. Step 2: Convert to fraction form
    1,086,640.90/1,629,961.35 = 288,045.70/x
  3. Step 3: Cross multiply
    1,086,640.90x = 1,629,961.35 × 288,045.70
  4. Step 4: Simplify right side
    1,086,640.90x = 469,503,358,033.70
  5. Step 5: Solve for x
    x = 469,503,358,033.70/1,086,640.90
  6. Step 6: Final answer
    x = 432,068.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.