Home / 818,868.45-1,228,054.82-286,290.21

Finding the Fourth Proportional to 818,868.45, 1,228,054.82 and 286,290.21

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Solution

The fourth proportional to 818,868.45, 1,228,054.82 and 286,290.21 is: 429,348.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,868.45 : 1,228,054.82 = 286,290.21 : x
  2. Step 2: Convert to fraction form
    818,868.45/1,228,054.82 = 286,290.21/x
  3. Step 3: Cross multiply
    818,868.45x = 1,228,054.82 × 286,290.21
  4. Step 4: Simplify right side
    818,868.45x = 351,580,077,093.45
  5. Step 5: Solve for x
    x = 351,580,077,093.45/818,868.45
  6. Step 6: Final answer
    x = 429,348.66

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Double scale
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1.5x scale

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.